ARM: dts: ast2600: Update SDHCI nodes

Match the description used by the Linux kernel, except use scu instead
of syscon as the phandle.

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/arch/arm/dts/ast2600-evb.dts b/arch/arm/dts/ast2600-evb.dts
index bb438d5..a9bba96 100644
--- a/arch/arm/dts/ast2600-evb.dts
+++ b/arch/arm/dts/ast2600-evb.dts
@@ -15,9 +15,9 @@
 	};
 
 	aliases {
-		mmc0 = &emmc_slot0;
-		mmc1 = &sdhci_slot0;
-		mmc2 = &sdhci_slot1;
+		mmc0 = &emmc;
+		mmc1 = &sdhci0;
+		mmc2 = &sdhci1;
 		spi0 = &fmc;
 		spi1 = &spi1;
 		spi2 = &spi2;
@@ -134,18 +134,16 @@
 	};
 };
 
-&emmc {
-	u-boot,dm-pre-reloc;
-	timing-phase = <0x700ff>;
+
+&emmc_controller {
+        status = "okay";
 };
 
-&emmc_slot0 {
-	u-boot,dm-pre-reloc;
-	status = "okay";
-	bus-width = <4>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_emmc_default>;
-	sdhci-drive-type = <1>;
+&emmc {
+        non-removable;
+        bus-width = <4>;
+        max-frequency = <100000000>;
+        clk-phase-mmc-hs200 = <9>, <225>;
 };
 
 &i2c4 {