powerpc/85xx: Enable USB2 controller node for P1020RDB

Enable USB2 controller node for P1020RDB. USB2 controller is used only
when board boots from SPI or SD as it is muxed with eLBC
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/p1020rdb.dtsi

 /*
  * P1020 RDB Device Tree Source stub (no addresses or top-level ranges)
  *
- * Copyright 2011 Freescale Semiconductor Inc.
+ * Copyright 2011-2012 Freescale Semiconductor Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -192,15 +192,12 @@ usb@22000 {
 		phy_type = "ulpi";
 	};
 
-	/* USB2 is shared with localbus, so it must be disabled
-	   by default. We can't put 'status = "disabled";' here
-	   since U-Boot doesn't clear the status property when
-	   it enables USB2. OTOH, U-Boot does create a new node
-	   when there isn't any. So, just comment it out.
+	/* USB2 is shared with localbus. It is used
+	   only in case of SPI and SD boot after
+	   appropriate device-tree fixup done by uboot */
 	usb@23000 {
 		phy_type = "ulpi";
 	};
-	*/
 
 	mdio@24000 {
 		phy0: ethernet-phy@0 {