The gcc-poison-parameters was added specifically to deal with an issue
on ppc targets and a bug when we build with -Os -frename-registers.
This bug below reports the issue and is fixed in gcc-4.6.x/mainline:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44618
Backport patch to gcc 4.5.1.
(From OE-Core rev: fef385e37e82a0eec743fbd1da11021b9e7158b5)
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>