arm/dt: pm8941/pm8226: Add VADC channel

Add VADC channel to read USB_ID with no internal
pull-up.

Change-Id: I02a8a8536a3fe65ef7635b54c4e17f840993184a
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
2 files changed