usb: xhci-msm-hsic: Configure strobe and data gpio pads for HSIC usage

Strobe and data gpios need to get configured as HSIC strobe and data
lines. Hence enable these gpio pads for normal HSIC operation upon
driver bind and disable them back upon driver unbind.

Change-Id: I66cc69a30a6863e779b9c2eb4707cfefb802252b
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>