ehci: hsic: Add resume gpio support

some peripherals connected to hsic controller cannot wakeup from XO
shutdown using in-band bus resume signalling. If present, use resume
gpio to bring peripherals out of XO shutdown before resuming the bus.

Change-Id: I7b80c95f31e854a09e673a9367ab85e4977a0fa0
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>
3 files changed