usb: phy: msm: Use correct HS_PHY_CTRL register

Driver supports using one of the two HSPHYs with the
controller based on the DT flag. There are two different
HS_PHY_CTRL registers for these PHYs. Based on the PHY
selected select the correct HS_PHY_CTRL register.

Change-Id: I4c85708a4d7daf645fa5cbff0e3906541fdb7b1f
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>