[PATCH] ARM: bitops

Convert ARM bitop assembly to a macro.  All bitops follow the same
format, so it's silly duplicating the code when only one or two
instructions are different.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

arch/arm/lib/changebit.S

@@ -9,6 +9,7 @@
  */
 #include <linux/linkage.h>
 #include <asm/assembler.h>
+#include "bitops.h"
                 .text
 
 /* Purpose  : Function to change a bit
@@ -17,12 +18,4 @@
 ENTRY(_change_bit_be)
 		eor	r0, r0, #0x18		@ big endian byte ordering
 ENTRY(_change_bit_le)
-		and	r2, r0, #7
-		mov	r3, #1
-		mov	r3, r3, lsl r2
-		save_and_disable_irqs ip, r2
-		ldrb	r2, [r1, r0, lsr #3]
-		eor	r2, r2, r3
-		strb	r2, [r1, r0, lsr #3]
-		restore_irqs ip
-		RETINSTR(mov,pc,lr)
+	bitop	eor