nios2: rename default RAM region from 'SRAM' to 'RAM'

It's useful for the default RAM region to have a uniform name across
architectures so higher-level build processes do not need to have their
own awareness of the names. Since NIOS2 uniformly uses 'SRAM', change it
to 'RAM' to match most other architectures.

Signed-off-by: Peter Marheine <[email protected]>

Author: tari

include/zephyr/arch/nios2/linker.ld

@@ -42,11 +42,10 @@
 
 #ifdef CONFIG_XIP
 	#define ROMABLE_REGION FLASH
-	#define RAMABLE_REGION SRAM
 #else
-	#define ROMABLE_REGION SRAM
-	#define RAMABLE_REGION SRAM
+	#define ROMABLE_REGION RAM
 #endif
+#define RAMABLE_REGION RAM
 
 #ifdef CONFIG_XIP
 
@@ -56,7 +55,7 @@ MEMORY
     {
     RESET (rx) : ORIGIN = _RESET_VECTOR, LENGTH = 0x20
     FLASH (rx) : ORIGIN = _RESET_VECTOR + 0x20 , LENGTH = (_ROM_SIZE - 0x20)
-    SRAM  (wx) : ORIGIN = _EXC_VECTOR, LENGTH = _RAM_SIZE - (_EXC_VECTOR - _RAM_ADDR)
+    RAM   (wx) : ORIGIN = _EXC_VECTOR, LENGTH = _RAM_SIZE - (_EXC_VECTOR - _RAM_ADDR)
     /* Used by and documented in include/linker/intlist.ld */
     IDT_LIST  (wx)      : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
 
@@ -67,7 +66,7 @@ MEMORY
 MEMORY
     {
     RESET (wx) : ORIGIN = _RESET_VECTOR, LENGTH = 0x20
-    SRAM  (wx) : ORIGIN = _EXC_VECTOR, LENGTH = _RAM_SIZE - (_EXC_VECTOR - _RAM_ADDR)
+    RAM   (wx) : ORIGIN = _EXC_VECTOR, LENGTH = _RAM_SIZE - (_EXC_VECTOR - _RAM_ADDR)
 
     /* Used by and documented in include/linker/intlist.ld */
     IDT_LIST  (wx)      : ORIGIN = 0xFFFFF7FF, LENGTH = 2K