baytrail: set max frequency early in romstage

Set the BSP to operate at max frequency early in romstage.
The call to punit_init() is when the frequency actually ramps as
that makes the punit actually start working.

BUG=chrome-os-partner:22857
BRANCH=None
TEST=Built and booted. Noted operating frequency status is max.

Change-Id: Icfd9e5c7682aa21fc740bd687607ca6a66597d5e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172131
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
4 files changed