x86_64: prepare shared mm/ioremap.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --cc arch/x86_64/mm/Makefile
Simple merge

diff --cc arch/x86_64/mm/ioremap_64.c
Simple merge