ARC: [axs10x] use generic OHCI/EHCI DT bindings

With back-ported from 3.15 support of generic OHCI/EHCI instantiation
via DT we may use it finally for proper support of both USB 1.1 and 2.0
devices.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Author: abrodkin

arch/arc/boot/dts/axs10x_mb.dtsi

@@ -1,7 +1,7 @@
 /*
  * Support for peripherals on the AXS10x mainboard
  *
- * Copyright (C) 2013, 2014 Synopsys, Inc. (www.synopsys.com)
+ * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -66,16 +66,16 @@
 		};
 
 		ehci@0x40000 {
-			compatible = "snps,h20apb-ehci";
+			compatible = "generic-ehci";
 			reg = < 0x40000 0x100 >;
 			interrupts = < 8 >;
 		};
 
-		/* ohci@0x60000 {
-			compatible = "snps,h20apb-ohci";
+		ohci@0x60000 {
+			compatible = "generic-ohci";
 			reg = < 0x60000 0x100 >;
 			interrupts = < 8 >;
-		}; */
+		};
 
 		mmc@0x15000 {
 			compatible = "snps,dw-mshc";