arm: use canonical sub mnemonic
Building some arm boards with older binutils may produce errors like this:
---8<---
crt0.S: Assembler messages:
crt0.S:70: Error: register expected, not '#(184)' -- `sub sp,#(184)'
--->8---
Use canonical version of the subtract mnemonic to avoid those issues.
Reported-by: Alexey Smishlayev <alexey@xtech2.lv>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/arch/arm/cpu/armv7/lowlevel_init.S b/arch/arm/cpu/armv7/lowlevel_init.S
index 69e3053..f1aea05 100644
--- a/arch/arm/cpu/armv7/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/lowlevel_init.S
@@ -24,7 +24,7 @@
#ifdef CONFIG_SPL_BUILD
ldr r9, =gdata
#else
- sub sp, #GD_SIZE
+ sub sp, sp, #GD_SIZE
bic sp, sp, #7
mov r9, sp
#endif