tests: timer cycle64: Fix filtering for POSIX arch

This test was excluding and including only
the native_posix board, while it should have instead
excluded/allowed anything in the architecture.
=> Change the filtering accordingly.

Signed-off-by: Alberto Escolar Piedras <[email protected]>

Author: aescolar

tests/kernel/timer/cycle64/testcase.yaml

@@ -13,10 +13,10 @@ tests:
   kernel.timer.cycle64:
     tags: kernel timer
     filter: CONFIG_TIMER_HAS_64BIT_CYCLE_COUNTER
-    platform_exclude: native_posix
+    arch_exclude: posix
     timeout: 140
     slow: true
   kernel.timer.cycle64.fast:
     tags: kernel timer
     filter: CONFIG_TIMER_HAS_64BIT_CYCLE_COUNTER
-    platform_allow: native_posix
+    arch_allow: posix