usb: phy-msm-usb: Add support for the PHY based ID detection

The Femto PHY wrapper has an IRQ to generate an interrupt for ID line
state change. The USB PHY can generate this interrupt in retention mode
and also MPM pin is available for ID detection during deep sleep. The
PHY regulators can not be turned off, instead they are put into LPM.

Change-Id: I20f82989fcde3cfd4740f76bf0b3c72194cffc49
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>