ARM: dts: imx: Add dr_mode host setting to all host-only usb instances

The chipidea driver adds an extra line of spam to the log when a
host-only chipidea instance is left set to the default of a dual role
controller.

[    2.010873] ci_hdrc ci_hdrc.1: doesn't support gadget

Set the dr_mode property to host on all the host-only nodes
to avoid this warning.

Signed-off-by: Matt Porter <mporter@konsulko.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx53.dtsi

@@ -309,6 +309,7 @@
 				clocks = <&clks IMX5_CLK_USBOH3_GATE>;
 				fsl,usbmisc = <&usbmisc 1>;
 				fsl,usbphy = <&usbphy1>;
+				dr_mode = "host";
 				status = "disabled";
 			};
 
@@ -318,6 +319,7 @@
 				interrupts = <16>;
 				clocks = <&clks IMX5_CLK_USBOH3_GATE>;
 				fsl,usbmisc = <&usbmisc 2>;
+				dr_mode = "host";
 				status = "disabled";
 			};
 
@@ -327,6 +329,7 @@
 				interrupts = <17>;
 				clocks = <&clks IMX5_CLK_USBOH3_GATE>;
 				fsl,usbmisc = <&usbmisc 3>;
+				dr_mode = "host";
 				status = "disabled";
 			};