ARM: dts: msm: add PMIC rev-id handle in PM8916 ADC_TM node

ADC_TM uses rev-id to identify PMIC revision and based
on the revision number it enables the fast averaging mode
and configures fast averaging samples.

Change-Id: Ief2287d9db600a96ea4d419963038ba2f65f2b03
Signed-off-by: Dipen Parmar <dipenp@codeaurora.org>