This adds a new option to the set of console UART choices and uses the
common console wrapper for bg4cd based devices.
BRANCH=none
BUG=chrome-os-partner:32631
TEST=with the upcoming SOC specific patch applied, when building with
serial console enabled the following option shows up in
auto.conf:
CONFIG_CONSOLE_SERIAL_BG4CD=y
Change-Id: Id2aa2ed4827740aaf04514233bd57cd8df0fea55
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/223596
Reviewed-by: Aaron Durbin <adurbin@chromium.org>