ipq6018: usb: Update USB init and deinit functions

There is a change in reference clock(XO) frequency of
ipq6018(24MHz) from ipq807x(19.2MHz) platform.
So,  updated USB phy init sequence. Also, updated
clock init and usb deinit functions.

Change-Id: Ie48867d1c0740562e2c108ef3b2caa187fa95485
Signed-off-by: Balaji Prakash J <bjagadee@codeaurora.org>
2 files changed