ARM: dts: Add support for OMAP4 Gumstix DuoVero/Parlor

Gumstix DuoVero is an OMAP4430-based Computer On Module.
Parlor is one of the available expansion board.

Tested features:
- GPMC ethernet
- HSUSB2 and OTG
- Audio out
- WiFi and Bluetooth (w2cbw0015 SDIO module)
- LED and button

Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index 45dbe4e..775ea6a 100644
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -99,6 +99,9 @@
 - OMAP4 PandaBoard : Low cost community board
   compatible = "ti,omap4-panda", "ti,omap4430"
 
+- OMAP4 DuoVero with Parlor : Commercial expansion board with daughter board
+  compatible = "gumstix,omap4-duovero-parlor", "gumstix,omap4-duovero", "ti,omap4430", "ti,omap4";
+
 - OMAP3 EVM : Software Development Board for OMAP35x, AM/DM37x
   compatible = "ti,omap3-evm", "ti,omap3"