phy: omap-control: update dra7 and am437 usb2 bindings

The dra7-usb2 and am437-usb2 bindings have not yet been used.
Change them to be more elegant.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/phy-omap-control.c

@@ -228,11 +228,11 @@ static const struct of_device_id omap_control_phy_id_table[] = {
 		.data = &pipe3_data,
 	},
 	{
-		.compatible = "ti,control-phy-dra7usb2",
+		.compatible = "ti,control-phy-usb2-dra7",
 		.data = &dra7usb2_data,
 	},
 	{
-		.compatible = "ti,control-phy-am437usb2",
+		.compatible = "ti,control-phy-usb2-am437",
 		.data = &am437usb2_data,
 	},
 	{},