ARM: kirkwood: provide pinctrl default to sdio nodes

SDIO controllers found on Marvell Kirkwood 6281/6282 SoCs require
pins to be muxed by pinctrl. As there is only one sane pinctrl
setting for this, provide default pinctrl properties to the controller
nodes.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/boot/dts/kirkwood-6282.dtsi b/arch/arm/boot/dts/kirkwood-6282.dtsi
index 3933a33..f010c21 100644
--- a/arch/arm/boot/dts/kirkwood-6282.dtsi
+++ b/arch/arm/boot/dts/kirkwood-6282.dtsi
@@ -125,6 +125,8 @@
 			reg = <0x90000 0x200>;
 			interrupts = <28>;
 			clocks = <&gate_clk 4>;
+			pinctrl-0 = <&pmx_sdio>;
+			pinctrl-names = "default";
 			bus-width = <4>;
 			cap-sdio-irq;
 			cap-sd-highspeed;