arm64: split cpu.h header

Add a cpu-internal.h for internal prototypes to the
architecture specific code.

BUG=chrome-os-partner:31761
BRANCH=None
TEST=Built and booted.

Change-Id: I12a379f86056a9a2007a7c036d65b5e08e558d0e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 5dcd488326f6496d80eb1fe1ff4414ebba1280e9
Original-Change-Id: I8ab520478954a3b43e8e0831d1883f9a791850aa
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/216924
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9041
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
3 files changed