uclibc: arc: add patch that adds __kernel_(u)long

This adds a patch that adds the __kernel_long and __kernel_ulong types to
uClibc. This fixes the build failure with Linux 3.10 headers.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>