ARM: dts: msm: Update QMP PHY VDD voltage level on kona

Update voltage from 0.88V to 0.912V as per the kona power
grid for primary and secondary USB QMP phy.

Change-Id: I2f582f65b66c272a6277c88c5c0675c6675cdb15
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>