Pull percpu-dtc into release branch

diff --cc arch/ia64/kernel/entry.S
Simple merge

diff --cc arch/ia64/kernel/setup.c
Simple merge

diff --cc arch/ia64/kernel/vmlinux.lds.S
Simple merge

diff --cc arch/ia64/mm/init.c
Simple merge

diff --cc include/asm-ia64/processor.h
Simple merge