platform: msm8996: Reset master clock for usb

During boot up earlier stages of bootloader setup the high speed only
mode by writing to usb general config registers. Due to this fastboot
always enumerates in high speed mode. To avoid this update the reset
sequence to include master clock reset to initialize the general config
register to reset state.

Change-Id: I5916f68e6c1d2057d826fbe01648346946868fbe
1 file changed