cmsis: fix rtx_def inclusion in .S files for Gcc Arm

rtx_def includes two CMSIS headers that pull in C/C++ headers in our case. As I found out,
they should only define macros. We can fix it but it will require some refactoring as our targets
use mbed rtx headers to define heap using stdin header, plus some other offenders.

Workaround is to exclude the headers we do not need in irq assembly files.

Tracking issue ARMmbed#14962

Author: Martin Kojtal

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_M0/irq_cm0.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         .equ     I_T_RUN_OFS, 20        // osRtxInfo.thread.run offset

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_M0P/irq_cm0.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         .equ     I_T_RUN_OFS, 20        // osRtxInfo.thread.run offset

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_M23/irq_armv8mbl.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         #ifndef  DOMAIN_NS

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_M3/irq_cm3.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         #if (defined(__ARM_FP) && (__ARM_FP > 0))

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_M33/irq_armv8mml.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         #ifndef  DOMAIN_NS

cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Source/TOOLCHAIN_GCC/TARGET_RTOS_M4_M7/irq_cm4f.S

@@ -26,6 +26,9 @@
 
         .syntax  unified
 
+        // Mbed OS patch: Exclude RTE_Components.h and RTX_Config.h inclusion in .S files
+        #define RTX_CONFIG_H_
+        #undef _RTE_
         #include "rtx_def.h"
 
         #if (defined(__ARM_FP) && (__ARM_FP > 0))