ARM: dts: am43xx: Enable dual-role mode for USB1

USB1 port is micro-AB type and can function as peripheral
as well as host. Enable dual-role mode for USB1.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am437x-gp-evm.dts

@@ -805,7 +805,7 @@ &usb2_phy1 {
 };
 
 &usb1 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
 	status = "okay";
 };
 

arch/arm/boot/dts/am437x-sk-evm.dts

@@ -600,7 +600,7 @@ &usb2_phy1 {
 };
 
 &usb1 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&usb1_pins>;

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -856,7 +856,7 @@ &usb2_phy1 {
 };
 
 &usb1 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
 	status = "okay";
 };