[POWERPC] 83xx: Added new dr_mode property for usb controller on 83xx

Added a new dr_mode property to describe what mode the DR controller is being
used in (host, device, OTG).  Updated the MPC8349E MDS dts with this new property.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Documentation/powerpc/booting-without-of.txt

@@ -1334,6 +1334,9 @@ platforms are moved over to use the flattened-device-tree model.
       fsl-usb2-mph compatible controllers.  Either this property or
       "port0" (or both) must be defined for "fsl-usb2-mph" compatible 
       controllers.
+    - dr_mode : indicates the working mode for "fsl-usb2-dr" compatible
+      controllers.  Can be "host", "peripheral", or "otg".  Default to
+      "host" if not defined for backward compatibility.
 
    Recommended properties :
     - interrupts : <a b> where a is the interrupt number and b is a
@@ -1367,6 +1370,7 @@ platforms are moved over to use the flattened-device-tree model.
 		#size-cells = <0>;
 		interrupt-parent = <700>;
 		interrupts = <26 1>;
+		dr_mode = "otg";
 		phy = "ulpi";
 	};
 

arch/powerpc/boot/dts/mpc8349emds.dts

@@ -39,6 +39,11 @@ memory {
 		reg = <00000000 10000000>;	// 256MB at 0
 	};
 
+	bcsr@e2400000 {
+		device_type = "board-control";
+		reg = <e2400000 8000>;
+	};
+
 	soc8349@e0000000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -103,6 +108,7 @@ usb@23000 {
 			#size-cells = <0>;
 			interrupt-parent = <700>;
 			interrupts = <26 2>;
+			dr_mode = "otg";
 			phy_type = "ulpi";
 		};