usb: phy: tegra: Get PHY mode using DT

Added a new PHY mode to support OTG.
Obtained Tegra USB PHY mode using DT property.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index 1b7519a..ff2d959 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -42,6 +42,7 @@
 enum tegra_usb_phy_mode {
 	TEGRA_USB_PHY_MODE_DEVICE,
 	TEGRA_USB_PHY_MODE_HOST,
+	TEGRA_USB_PHY_MODE_OTG,
 };
 
 struct tegra_xtal_freq;
@@ -66,7 +67,7 @@
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode,
+	void __iomem *regs, void *config,
 	void (*set_pts)(struct usb_phy *x, u8 pts_val),
 	void (*set_phcd)(struct usb_phy *x, bool enable));