ARM: dts: msm: Use low resolution timer for vph_pwr monitoring in APQ8084

Use the 3.9 millisecond timer for the vph_pwr line.
This is the same timer used by the mpp6_div1 ADC line.

CRs-Fixed: 629894
Change-Id: I97e9bedea6216c42831f9ca209ca7574b182e4b9
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>