Needed by older compilers.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This moves in the necessary libgcc bits for SUPERH32 and drops the
libgcc linking for the regular targets. This in turn allows us to rip
out quite a few hacks both in sh_ksyms_32 and arch/sh/Makefile.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>