msm: ehci-hsic: Add support for pinctrl framework

As the newer targets will be using pinctrl framework for gpio
configuration, our drivers need to be compatible with both set of targets
the one which do not use pinctrl and one which do. Adding support for both
these cases. ehci-hsic driver can configure data, strobe and resume gpio's.

Change-Id: I36d09f3a49e3f0940007ca6681db85fc4b142639
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>