Update CMakeLists.txt to proper name for the ports (FreeRTOS#1129)

Author: kar-rahul-aws

portable/CMakeLists.txt

@@ -798,8 +798,8 @@ target_include_directories(freertos_kernel_port_headers INTERFACE
     $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CA9>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_CA9>
 
     # ARMv8-A ports for GCC
-    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_AARCH64>:${CMAKE_CURRENT_LIST_DIR}/GCC/Arm_AARCH64>
-    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_AARCH64_SRE>:${CMAKE_CURRENT_LIST_DIR}/GCC/Arm_AARCH64_SRE>
+    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_AARCH64>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_AARCH64>
+    $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_AARCH64_SRE>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_AARCH64_SRE>
 
     # ARMv6-M port for GCC
     $<$<STREQUAL:${FREERTOS_PORT},GCC_ARM_CM0>:${CMAKE_CURRENT_LIST_DIR}/GCC/ARM_CM0>