uclibc: patch 0.9.31 for avr32, to add __kernel_long_t and __kernel_ulong_t data types

As reported by Thomas Petazzoni, the uclibc 0.9.31 build fails for avr32:

In file included from /opt/br-avr32-full-2013.11-rc1/usr/avr32-buildroot-linux-uclibc/sysroot/usr/include/linux/kernel.h:4,
                 from /opt/br-avr32-full-2013.11-rc1/usr/avr32-buildroot-linux-uclibc/sysroot/usr/include/linux/netlink.h:4,
                 from /opt/br-avr32-full-2013.11-rc1/usr/avr32-buildroot-linux-uclibc/sysroot/usr/include/linux/rtnetlink.h:5,
                 from libc/inet/netlinkaccess.h:27,
                 from libc/inet/if_index.c:36:
/opt/br-avr32-full-2013.11-rc1/usr/avr32-buildroot-linux-uclibc/sysroot/usr/include/linux/sysinfo.h:8: error: expected specifier-qualifier-list before '__kernel_long_t'
make[1]: *** [libc/inet/if_index.os] Error 1
make[1]: Leaving directory `/opt/toolchain-build/build/uclibc-0.9.31.1'

The problem is reported at:

  https://lkml.org/lkml/2013/5/18/1

The offending kernel commit is:

  http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ccdfcc398594



The fix is to patch uclibc 0.9.31 to add the missing kernel data types. The patch
will only be generated for avr32, since uclibc 0.9.31 is not available in Buildroot
for any other architecture.

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>