ARM: dts: Add support for the BeagleBoard xM A/B

BeagleBoard xM A/B has an inverted usb hub enable line vs the xM C

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
[tony@atomide.com: updated for missing bracket]
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 35c146f..0bdeba3 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -246,6 +246,7 @@
 	omap3-sbc-t3730.dtb \
 	omap3-devkit8000.dtb \
 	omap3-beagle-xm.dtb \
+	omap3-beagle-xm-ab.dtb \
 	omap3-evm.dtb \
 	omap3-evm-37xx.dtb \
 	omap3-ldp.dtb \