ARM: dts: Leave sdio1 as disabled on bcm28155-ap

The sdio1 interface pins are routed to an unpopulated daughter card
connector on the bcm28155-ap board.  Thus there is no need to mark
this interface as enabled.
Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>

arch/arm/boot/dts/bcm28155-ap.dts

@@ -49,11 +49,6 @@ i2c@3500d000 {
 		clock-frequency = <400000>;
 	};
 
-	sdio1: sdio@3f180000 {
-		max-frequency = <48000000>;
-		status = "okay";
-	};
-
 	sdio2: sdio@3f190000 {
 		non-removable;
 		max-frequency = <48000000>;