usb: phy: Add snapshot of USB PHY drivers

This change adds USB QUSB and USB QMP PHY drivers used
on QTI MSM platforms. This snapshot is taken as of
msm-4.4 commit <9d9cf7636c0d> ("Merge "clk: msm:
clock-gpu-cobalt: Update the GPU PLL FMAXes"").

Change-Id: Id7cdc862fa3f8c2b941fd7e572523b79f57e2697
Signed-off-by: Mayank Rana <mrana@codeaurora.org>