STM32H7 : use RAM instead of DTCMRAM (GCC_ARM toolchain)

Author: VVESTM

targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H743xI/device/TOOLCHAIN_GCC_ARM/STM32H743xI.ld

@@ -19,8 +19,8 @@ M_CRASH_DATA_RAM_SIZE = 0x100;
 MEMORY
 { 
   FLASH (rx)     : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
-  DTCMRAM (rwx)  : ORIGIN = 0x20000000, LENGTH = 128K
-  RAM (xrw)      : ORIGIN = 0x24000298, LENGTH = 512K - 0x298  /* end = 0x24080000 */
+  DTCMRAM (rwx)  : ORIGIN = 0x20000298, LENGTH = 128K-0x298
+  RAM (xrw)      : ORIGIN = 0x24000000, LENGTH = 512K
   RAM_D2 (xrw)   : ORIGIN = 0x30000000, LENGTH = 288K
   RAM_D3 (xrw)   : ORIGIN = 0x38000000, LENGTH = 64K
   ITCMRAM (xrw)  : ORIGIN = 0x00000000, LENGTH = 64K
@@ -108,7 +108,7 @@ SECTIONS
         . += M_CRASH_DATA_RAM_SIZE;
         . = ALIGN(8);
         __CRASH_DATA_RAM_END__ = .; /* Define a global symbol at data end */
-    } > RAM
+    } > DTCMRAM
 
     .data : AT (__etext)
     {