Rename patches for uClibc version 0.9.31, for consistency with the general
patch naming scheme in Buildroot. Also remove a .avr32 extension from a patch;
this is not necessary, since uclibc 0.9.31 is unavailable on architectures
other than avr32.
Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
