glados: limit type-C voltage to 5V to increase charging reliability
glados: limit type-C voltage to 5V to increase charging reliability

Change charging workaround on glados to limit the max input voltage
to 5V. This provides more reliable charging by reducing the noise
on the i2c bus to battery and charger. Note, this limits charging
power to 15W.

BUG=none
BRANCH=none
TEST=load onto 3 different glados boards and charge for 10 minutes
with no i2c errors causing charging to stop.

Change-Id: I4d67b62a18cf40d645b132081a431f9ce187168b
Signed-off-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/276366
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>

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