powerpc/lib: Makefile, use obj64-y to consolidate 64-bit rules
powerpc/lib: Makefile, use obj64-y to consolidate 64-bit rules

Signed-off-by: Michael Ellerman <864f124608374e06e4da1fa5d2e47ed839b95411@ellerman.id.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs