eglibc: support mipsel little endian, filter out -march=mips32
Quote for eglibc source:
for mips eglibc now builds syscall tables for all abi's
so we make sure that we choose right march option which is
compatible with o32,n32 and n64 abi's
e.g. -march=mips32 is not compatible with n32 and n64 therefore
we filter it out in such case -march=from-abi which will be
mips1 when using o32 and mips3 when using n32/n64
Signed-off-by: Dennis Lan <dennis.yxun@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
