BCM270X_DT: Use bcm2835-sdhost on Compute Module

With the preceding commit:

  bcm2835-sdhost: Don't exit cmd wait loop on error

it is safe to use the bcm2835-sdhost driver on the Compute Module.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

arch/arm/boot/dts/bcm2708-rpi-cm.dtsi

@@ -23,9 +23,9 @@
 };
 
 
-&mmc {
+&sdhost {
 	pinctrl-names = "default";
-	pinctrl-0 = <&mmc_pins>;
+	pinctrl-0 = <&sdhost_pins>;
 	non-removable;
 	bus-width = <4>;
 	status = "okay";