[bsp]support AC6 for some bsp.

bsp/es32f0334/drivers/board.h

@@ -17,7 +17,7 @@
 #define ES32F0_SRAM_SIZE    0x8000
 #define ES32F0_SRAM_END     (0x20000000 + ES32F0_SRAM_SIZE)
 
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
     extern int Image$$RW_IRAM1$$ZI$$Limit;
     #define HEAP_BEGIN  ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__

bsp/es32f0654/drivers/board.h

@@ -17,7 +17,7 @@
 #define ES32F0_SRAM_SIZE    0x8000
 #define ES32F0_SRAM_END     (0x20000000 + ES32F0_SRAM_SIZE)
 
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
     extern int Image$$RW_IRAM1$$ZI$$Limit;
     #define HEAP_BEGIN  ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__

bsp/gd32e230k-start/drivers/board.h

@@ -25,7 +25,7 @@ extern char __ICFEDIT_region_RAM_end__;
 #define GD32_SRAM_END          (0x20000000 + GD32_SRAM_SIZE * 1024)
 #endif
 
-#ifdef __ARMCC_VERSION
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
 extern int Image$$RW_IRAM1$$ZI$$Limit;
 #define HEAP_BEGIN    (&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__

bsp/mm32l07x/drivers/board.h

@@ -16,7 +16,7 @@
 #define SRAM_SIZE 0x2000
 
 #define SRAM_END (SRAM_BASE + SRAM_SIZE)
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
     extern int Image$$RW_IRAM1$$ZI$$Limit;
     #define HEAP_BEGIN ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__

bsp/nuvoton_m451/applications/startup.c

@@ -29,7 +29,7 @@ extern int finsh_system_init(void);
 extern void finsh_set_device(const char* device);
 #endif
 
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
 extern int Image$$RW_IRAM1$$ZI$$Limit;
 #define M451_SRAM_BEGIN    (&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__

bsp/samd21/applications/startup.c

@@ -29,7 +29,7 @@ extern void finsh_system_init(void);
 extern void finsh_set_device(const char* device);
 #endif
 
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
 extern int Image$$RW_IRAM1$$ZI$$Limit;
 #elif __ICCARM__
 #pragma section="HEAP"
@@ -78,7 +78,7 @@ void rtthread_startup(void)
     rt_system_timer_init();
 
 #ifdef RT_USING_HEAP
-    #ifdef __CC_ARM
+    #if defined(__CC_ARM) || defined(__CLANG_ARM)
         rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)CHIP_SRAM_END);
     #elif __ICCARM__
         rt_system_heap_init(__segment_end("HEAP"), (void*)CHIP_SRAM_END);

bsp/swm320-lq100/drivers/board.h

@@ -24,7 +24,7 @@
 #endif
 
 #define SRAM_END (SRAM_BASE + SRAM_SIZE)
-#ifdef __CC_ARM
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
     extern int Image$$RW_IRAM1$$ZI$$Limit;
     #define HEAP_BEGIN ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
 #elif __ICCARM__