powerpc/boot: Makefile cleanup

The $(image-n) variable will never exist, because unset Kconfig options
are '' and not 'n'.

Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michal Marek 2014-10-02 15:49:15 +02:00 • committed by Michael Ellerman
commit 755457f992