When cr50 is not trying to do ccd, we dont need to monitor the devices.
Disable device state detection interrupts and the AP and EC UARTs.
BUG=none
BRANCH=none
TEST=gru and kevin monitor devices correctly when ccd is enabled, and
dont monitor anything when it is disabled.
Change-Id: Ic3f5974320486ff6dd0147c490a1c294cc2f6a76
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/356770
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>