ARM: 7425/1: extable: ensure fixup entries are 4-byte aligned

Fixup entries in the kernel exception tables should be 4-byte aligned
since we return directly to them when handling a faulting instruction in
the kernel.

This patch adds the missing align directives to the fixup entries.
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/futex.h

@@ -19,6 +19,7 @@
 	"	.long	1b, 4f, 2b, 4f\n"			\
 	"	.popsection\n"					\
 	"	.pushsection .fixup,\"ax\"\n"			\
+	"	.align	2\n"					\
 	"4:	mov	%0, " err_reg "\n"			\
 	"	b	3b\n"					\
 	"	.popsection"

arch/arm/kernel/entry-armv.S

@@ -495,6 +495,7 @@ ENDPROC(__und_usr)
  * The out of line fixup for the ldrt above.
  */
 	.pushsection .fixup, "ax"
+	.align	2
 4:	mov	pc, r9
 	.popsection
 	.pushsection __ex_table,"a"