Replace __bss_end__ with __bss_end

Note this is a tree-wide change affecting multiple architectures.

At present we use __bss_start, but mostly __bss_end__. This seems
inconsistent and in a number of places __bss_end is used instead.

Change to use __bss_end for the BSS end symbol throughout U-Boot. This
makes it possible to use the asm-generic/sections.h file on all
archs.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/nds32/cpu/n1213/start.S b/arch/nds32/cpu/n1213/start.S
index 889bf8b..558fd0e 100644
--- a/arch/nds32/cpu/n1213/start.S
+++ b/arch/nds32/cpu/n1213/start.S
@@ -240,7 +240,7 @@
 clear_bss:
 	la	$r0, __bss_start	/* r0 <- rel __bss_start in FLASH */
 	add	$r0, $r0, $r9		/* r0 <- rel __bss_start in FLASH */
-	la	$r1, __bss_end__	/* r1 <- rel __bss_end in RAM */
+	la	$r1, __bss_end		/* r1 <- rel __bss_end in RAM */
 	add	$r1, $r1, $r9		/* r0 <- rel __bss_end in RAM */
 	li	$r2, 0x00000000		/* clear */
 
diff --git a/arch/nds32/cpu/n1213/u-boot.lds b/arch/nds32/cpu/n1213/u-boot.lds
index cef19c5..c64d3b7 100644
--- a/arch/nds32/cpu/n1213/u-boot.lds
+++ b/arch/nds32/cpu/n1213/u-boot.lds
@@ -66,7 +66,7 @@
 		__bss_start = .;
 		*(.bss)
 		 . = ALIGN(4);
-		__bss_end__ = .;
+		__bss_end = .;
 	}
 
 }
diff --git a/arch/nds32/include/asm/u-boot-nds32.h b/arch/nds32/include/asm/u-boot-nds32.h
index ae1918d..a6d7beb 100644
--- a/arch/nds32/include/asm/u-boot-nds32.h
+++ b/arch/nds32/include/asm/u-boot-nds32.h
@@ -31,7 +31,7 @@
 
 /* for the following variables, see start.S */
 extern ulong __bss_start;	/* BSS start relative to _start */
-extern ulong __bss_end__;	/* BSS end relative to _start */
+extern ulong __bss_end;	/* BSS end relative to _start */
 extern ulong _end;		/* end of image relative to _start */
 extern ulong _start;		/* start of image relative to _start */
 extern ulong _TEXT_BASE;	/* code start */
diff --git a/arch/nds32/lib/board.c b/arch/nds32/lib/board.c
index c919928..a7d27fc 100644
--- a/arch/nds32/lib/board.c
+++ b/arch/nds32/lib/board.c
@@ -192,7 +192,7 @@
 
 	memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
 
-	gd->mon_len = (unsigned int)(&__bss_end__) - (unsigned int)(&_start);
+	gd->mon_len = (unsigned int)(&__bss_end) - (unsigned int)(&_start);
 
 	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 		if ((*init_fnc_ptr)() != 0)