libc/uClibc: add workaround patch for ICE in m68k builds

This patch/workaround is similar to the one proposed in
http://www.mail-archive.com/uclibc@uclibc.org/msg02475.html

Bug reproduced with GCC 4.6.3.

[ALL ] In file included from libc/inet/inet_ntoa.c:8:0:
[ALL ] libc/inet/addr.c: In function 'inet_ntoa_r':
[ALL ] libc/inet/addr.c:135:1: warning: visibility attribute not supported in this configuration; ignored [-Wattri
butes]
[ERROR] libc/inet/addr.c:135:1: internal compiler error: in output_move_qimode, at config/m68k/m68k.c:3160

Signed-off-by: "Esben Haabendal" <esben@haabendal.dk>
Message-Id: <87sja4d1ke.fsf@arh128.prevas.dk>
Patchwork-Id: 187181

--- gcc-4.3.4/libffi/src/arm/sysv.S	

+++ gcc-4.3.4/libffi/src/arm/sysv.S	

@@ -235,7 +235,7 @@ ARM_FUNC_START ffi_closure_SYSV

 	stmfd	sp!, {ip, lr}

 	UNWIND .save	{r0, lr}

 	add	r2, sp, #8

-	.pad #16

+	UNWIND .pad #16

 	sub	sp, sp, #16

 	str	sp, [sp, #8]

 	add	r1, sp, #8