usb: xhci-msm-hsic: Add support for PHY reset using BCR

Asynchronous block reset is needed to reset HSIC PHY using
block control register (USB_HS_HSIC_BCR). Reset from
GUSB2PHYCFG is not relevant for HSIC.

Change-Id: Icfd94061004468533793057bab0da0a10b98d82c
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>