hwmon: qpnp-adc: Update logic to support PMIC5

Few registers are not supported on PMIC5 which are available
on PMIC4. Update logic to program only available registers
for PMIC5.

Change-Id: I14ab3f1ebbc663f092982b95b595ec1ad08f9981
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
1 file changed