mb/google/zoombini: re-enable software sync

we had disabled software sync for bringup - we now have enough
functionality in place to turn on software sync.

Change-Id: Ib7f5a24ed8a47cb44b3f505e3cd49e0cb6931dc0
Signed-off-by: Caveh Jalali <caveh@google.com>
Reviewed-on: https://review.coreboot.org/23630
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed