[ARM] use errno #defines in assembly

Patch from: Randy Dunlap

From: Danilo Piazzalunga

Some assembly code (on various archs) either
 1. uses hardcoded errno numbers instead of the canonical macro
    names, or
 2. defines them locally, instead of including the appropriate
    header (while including other headers).

This patch "fixes" such usage in
 - getuser.S for arm
 - putuser.S for arm

arch/arm/lib/getuser.S

@@ -28,6 +28,7 @@
  */
 #include <asm/constants.h>
 #include <asm/thread_info.h>
+#include <asm/errno.h>
 
 	.global	__get_user_1
 __get_user_1:
@@ -89,7 +90,7 @@ __get_user_bad_8:
 	mov	r2, #0
 __get_user_bad:
 	mov	r1, #0
-	mov	r0, #-14
+	mov	r0, #-EFAULT
 	mov	pc, lr
 
 .section __ex_table, "a"

arch/arm/lib/putuser.S

@@ -28,6 +28,7 @@
  */
 #include <asm/constants.h>
 #include <asm/thread_info.h>
+#include <asm/errno.h>
 
 	.global	__put_user_1
 __put_user_1:
@@ -87,7 +88,7 @@ __put_user_8:
 	/* fall through */
 
 __put_user_bad:
-	mov	r0, #-14
+	mov	r0, #-EFAULT
 	mov	pc, lr
 
 .section __ex_table, "a"