Fix CMake build for GCC_ARM_CRx_MPU (#1308) (#1309)

Add GCC_ARM_CRX_MPU to the set of FREERTOS_PORT patterns that trigger
adding mpu_wrappers.c and mpu_wrappers_v2.c to freertos_kernel_port
target_sources.

Author: malsyned

portable/CMakeLists.txt

@@ -769,6 +769,7 @@ add_library(freertos_kernel_port OBJECT
 if( FREERTOS_PORT MATCHES "GCC_ARM_CM(3|4)_MPU" OR
     FREERTOS_PORT STREQUAL "IAR_ARM_CM4F_MPU" OR
     FREERTOS_PORT STREQUAL "RVDS_ARM_CM4_MPU" OR
+    FREERTOS_PORT STREQUAL "GCC_ARM_CRX_MPU" OR
     FREERTOS_PORT MATCHES "GCC_ARM_CM(23|33|55|85)_NTZ_NONSECURE" OR
     FREERTOS_PORT MATCHES "GCC_ARM_CM(23|33|55|85)_NONSECURE" OR
     FREERTOS_PORT MATCHES "GCC_ARM_CM(33|55|85)_TFM" OR