defconfig: msm: Enable VADC driver

Voltage ADC (VADC) on PMIC (Power management IC) supports
clients to read thermistor and phone voltage power.

Change-Id: Iaa2b85e4ed19392876cc9dda553cd22194cd85ce
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
2 files changed