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

 CT_EXPERIMENTAL=y

 CT_LOCAL_TARBALLS_DIR="${HOME}/src"

 CT_SAVE_TARBALLS=y

 CT_LOG_EXTRA=y

 CT_ARCH_m68k=y

 CT_KERNEL_linux=y

 CT_BINUTILS_V_2_21_1a=y

 CT_CC_V_4_7_2=y

 CT_LIBC_UCLIBC_CONFIG_FILE="${CT_LIB_DIR}/samples/${CT_TARGET}/${CT_LIBC}-${CT_LIBC_VERSION}.config"

 CT_THREADS_LINUXTHREADS=y