hoho: updates for rev2.0
hoho: updates for rev2.0

BRANCH=none
BUG=chrome-os-partner:31192
TEST=manual,

- compiles & installs & runs on hoho rev2.0
- see RFUx -> SBU gpio change
> gpioget PD_SBU_ENABLE
  1  PD_SBU_ENABLE

Signed-off-by: Todd Broch <tbroch@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/220181
Reviewed-by: Alec Berg <alecaberg@chromium.org>
(cherry picked from commit f93c3e83e469b63c79407b2b8dc14f250b4e1950)
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

Change-Id: Ice6963e05463670653470b24d451d41a35e249f3
Reviewed-on: https://chromium-review.googlesource.com/221536
Tested-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Reviewed-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Commit-Queue: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

thehobn/ec,thehobn/ec,thehobn/ec,thehobn/ec