Unify x86 a.out_32.h and a.out_64.h

[ tglx: Kbuild fixup ]
Signed-off-by: NChris Snook <csnook@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>