usb: musb: am335x: add second port to beagle bone

So I assumed that Beagle bone has only one USB port in host mode because
the micro USB connector had an USB-UART there. I was wrong a little. The
second port runs on host mode, but the micro USB plug is connected to an
internal HUB with two ports: one to the USB-UART and one to musb
instance one.
For that reason, this patch enables both ports: the primary in device
mode only and the second in host mode only.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

arch/arm/boot/dts/am335x-bone.dts

@@ -131,9 +131,22 @@ usb-phy@47401300 {
 				status = "okay";
 			};
 
+			usb-phy@47401b00 {
+				status = "okay";
+			};
+
 			usb@47401000 {
 				status = "okay";
 			};
+
+			usb@47401800 {
+				status = "okay";
+				dr_mode = "host";
+			};
+
+			dma-controller@07402000  {
+				status = "okay";
+			};
 		};
 
 		i2c0: i2c@44e0b000 {