From: Tom Rini <trini@kernel.crashing.org>

Fix arch/ppc/boot/ so that everything now works with 'make O='.

Partially by: Geoffrey LEVAND <geoffrey.levand@am.sony.com>.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>