RTX5: Pre-processor defines used for assembly

CMSIS repo does not support pre-processor defines, hence multiple assembly
files are added for secure/non-secure and floating point tools.

Mbed OS tools support assembly file pre-processing, but the build system
does not support multiple assembly files for each target, hence updating
the assembly files.

Author: deepikabhavnani

rtos/TARGET_CORTEX/rtx5/RTX/Source/TOOLCHAIN_ARM/TARGET_M23/irq_armv8mbl.S

@@ -24,9 +24,9 @@
 ; */
 
 
-                IF       :LNOT::DEF:__DOMAIN_NS
+#ifndef __DOMAIN_NS
 __DOMAIN_NS     EQU      0
-                ENDIF
+#endif
 
 I_T_RUN_OFS     EQU      20                     ; osRtxInfo.thread.run offset
 TCB_SM_OFS      EQU      48                     ; TCB.stack_mem offset

rtos/TARGET_CORTEX/rtx5/RTX/Source/TOOLCHAIN_ARM/TARGET_M23/irq_armv8mbl_ns.S

@@ -24,15 +24,13 @@
 ; */
 
 
-                IF       :LNOT::DEF:__DOMAIN_NS
+#ifndef __DOMAIN_NS
 __DOMAIN_NS     EQU      0
-                ENDIF
+#endif
 
-                IF       ({FPU}="FPv5-SP") || ({FPU}="FPv5_D16")
-__FPU_USED      EQU      1
-                ELSE
+#ifndef __FPU_USED
 __FPU_USED      EQU      0
-                ENDIF
+#endif
 
 I_T_RUN_OFS     EQU      20                     ; osRtxInfo.thread.run offset
 TCB_SM_OFS      EQU      48                     ; TCB.stack_mem offset

rtos/TARGET_CORTEX/rtx5/RTX/Source/TOOLCHAIN_ARM/TARGET_M33/irq_armv8mml.S

@@ -27,9 +27,9 @@
         .file    "irq_armv8mbl.S"
         .syntax  unified
 
-        .ifndef  __DOMAIN_NS
+#ifndef  __DOMAIN_NS
         .equ     __DOMAIN_NS, 0
-        .endif
+#endif
 
         .equ     I_T_RUN_OFS, 20        // osRtxInfo.thread.run offset
         .equ     TCB_SM_OFS,  48        // TCB.stack_mem offset

rtos/TARGET_CORTEX/rtx5/RTX/Source/TOOLCHAIN_ARM/TARGET_M33/irq_armv8mml_ns.S

@@ -27,13 +27,13 @@
         .file    "irq_armv8mml.S"
         .syntax  unified
 
-        .ifndef  __DOMAIN_NS
++#ifndef __DOMAIN_NS
         .equ     __DOMAIN_NS, 0
-        .endif
+#endif
 
-        .ifndef  __FPU_USED
+#ifndef  __FPU_USED
         .equ     __FPU_USED,  0
-        .endif
+#endif
 
         .equ     I_T_RUN_OFS, 20        // osRtxInfo.thread.run offset
         .equ     TCB_SM_OFS,  48        // TCB.stack_mem offset