baytrail: additional iosf changes

Allow for one to write an individual byte of a 32-bit register
when sending a read/write through the IOSF messaging system.
Add PUNIT registers and fields for early sequencing.

BUG=chrome-os-partner:23085
BRANCH=None
TEST=Built and partially booted with changes that use PUNIT
     registers and individual byte en fields.

Change-Id: I929fb5c51d805c55c478cab884e3572254987fc7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171710
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
1 file changed