defconfig: msm: Enable VADC and ADC_TM peripheral drivers for lito

VADC peripheral supports clients to read ADC channels.
Clients include reading vph_pwr and on board system
thermistors.
ADC_TM peripheral driver is used by clients to set thresholds
and receive notification for VADC channels.

Change-Id: I59777bf4734d644aa4faa1e02d9b1190ca595dcc
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>