[ARM] 2875/1: Data Abort fixes

Patch from Timothy Baldwin

All data aborts are treated as read accesses. The existing code updates the wrong bit of r1, also the comments are wrong in that the sense of the L bit is inverted.
Signed-off-by: NTimothy E. Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/proc-arm6_7.S

@@ -38,8 +38,8 @@ ENTRY(cpu_arm7_data_abort)
 	mrc	p15, 0, r1, c5, c0, 0		@ get FSR
 	mrc	p15, 0, r0, c6, c0, 0		@ get FAR
 	ldr	r8, [r0]			@ read arm instruction
-	tst	r8, #1 << 20			@ L = 1 -> write?
-	orreq	r1, r1, #1 << 8			@ yes.
+	tst	r8, #1 << 20			@ L = 0 -> write?
+	orreq	r1, r1, #1 << 11		@ yes.
 	and	r7, r8, #15 << 24
 	add	pc, pc, r7, lsr #22		@ Now branch to the relevant processing routine
 	nop
@@ -71,8 +71,8 @@ ENTRY(cpu_arm6_data_abort)
 	mrc	p15, 0, r1, c5, c0, 0		@ get FSR
 	mrc	p15, 0, r0, c6, c0, 0		@ get FAR
 	ldr	r8, [r2]			@ read arm instruction
-	tst	r8, #1 << 20			@ L = 1 -> write?
-	orreq	r1, r1, #1 << 8			@ yes.
+	tst	r8, #1 << 20			@ L = 0 -> write?
+	orreq	r1, r1, #1 << 11		@ yes.
 	and	r7, r8, #14 << 24
 	teq	r7, #8 << 24			@ was it ldm/stm
 	movne	pc, lr