[OPENMP][DOCS] Update OpenMP status (NFC)

Summary: This is updating the OpenMP status table. Cray has volunteered for `defaultmap` and supporting `in_reduction` on the `target` construct, so the status on those entries from was changed from "unclaimed". Also, a new entry was added for supporting non-contiguous arrays sections on the `target update` directive.

Reviewers: ABataev, hfinkel, jdoerfert, kkwli0

Reviewed By: ABataev

Subscribers: guansong, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D69923

Author: alexey-bataev

clang/docs/OpenMPSupport.rst

@@ -173,13 +173,13 @@ implementation.
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | device extension             | OMP_TARGET_OFFLOAD environment variable                      | :good:`done`             | D50522                                                                |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
-| device extension             | support full 'defaultmap' functionality                      | :part:`worked on`        |                                                                       |
+| device extension             | support full 'defaultmap' functionality                      | :part:`worked on`        | D69204                                                                |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | device extension             | device specific functions                                    | :none:`unclaimed`        |                                                                       |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | device extension             | clause: device_type                                          | :good:`done`             |                                                                       |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
-| device extension             | clause: in_reduction                                         | :none:`unclaimed`        | r308768                                                               |
+| device extension             | clause: in_reduction                                         | :part:`worked on`        | r308768                                                               |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | device extension             | omp_get_device_num()                                         | :part:`worked on`        | D54342                                                                |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
@@ -211,6 +211,8 @@ implementation.
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | device extension             | teams construct on the host device                           | :part:`worked on`        | Clang part is done, r371553.                                          |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
+| device extension             | support non-contiguous array sections for target update      | :part:`worked on`        |                                                                       |
++------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | atomic extension             | hints for the atomic construct                               | :part:`worked on`        | D51233                                                                |
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 | base language                | C11 support                                                  | :none:`unclaimed`        |                                                                       |