Move the ACPI related defines and function prototypes to a new
header at broadwell/acpi.h.
BUG=chrome-os-partner:28234
TEST=None
Change-Id: Id3e3e92d535613e2a8ffbf6b39d07d1ac231e9bd
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/198914
Reviewed-by: Aaron Durbin <adurbin@chromium.org>