thermal: adc_tm: Update support for PMIC4 ADC_TM

Add new compatible field and corresponding device data
for PMIC4 ADC_TM to distinguish it from PMIC5, which
has different device data.

Change-Id: I6c9f20963248c763a6df1f996fd25bdfd6749fa3
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Signed-off-by: Asha Magadi Venkateshamurthy <amagad@codeaurora.org>