xhci: hsic: De-assert host ready gpio when device in configured state

Host ready gpio needs to be de-asserted after usb device is enumerated.
Add hc driver call back which gets called from usb core when usb device
state is set to USB_STATE_CONFIGURED. This callback lowers host ready
gpio.

CRs-Fixed: 672909
Change-Id: Icea6174d594691a8f8a87eac45f79be05abaf87b
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>