usb: chipidea: add support to the generic PHY framework

This patch adds support of the PHY framework for ChipIdea drivers.
Changes are done in both the ChipIdea common code and in the drivers
accessing the PHY. This is done by adding a new PHY member in
ChipIdea's structures and by taking care of it in the code.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

include/linux/usb/chipidea.h

@@ -13,6 +13,8 @@ struct ci_hdrc_platform_data {
 	/* offset of the capability registers */
 	uintptr_t	 capoffset;
 	unsigned	 power_budget;
+	struct phy	*phy;
+	/* old usb_phy interface */
 	struct usb_phy	*usb_phy;
 	enum usb_phy_interface phy_mode;
 	unsigned long	 flags;