[POWERPC] Fix 40x build

Remove inclusion of __res on 40x.  We don't need it in arch/powerpc

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>

diff --cc arch/powerpc/kernel/head_40x.S
Simple merge

diff --cc arch/powerpc/kernel/ppc_ksyms.c
Simple merge