powerpc/44x/fsp2: Enable eMMC arasan for fsp2 platform

Add mmc0 changes for enabling arasan emmc and change
defconfig appropriately.
Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/boot/dts/fsp2.dts

@@ -52,6 +52,7 @@ cuboot */
 	clocks {
 		mmc_clk: mmc_clk {
 			compatible = "fixed-clock";
+			#clock-cells = <0>;
 			clock-frequency = <50000000>;
 			clock-output-names = "mmc_clk";
 		};
@@ -359,20 +360,6 @@ UIC2_15: uic2_15 {
 		interrupts = <31 0x4 15 0x84>;
 	};
 
-	mmc0: sdhci@020c0000 {
-		compatible	= "st,sdhci-stih407", "st,sdhci";
-		status		= "disabled";
-		reg		= <0x020c0000 0x20000>;
-		reg-names	= "mmc";
-		interrupt-parent = <&UIC1_3>;
-		interrupts	= <21 0x4 22 0x4>;
-		interrupt-names	= "mmcirq";
-		pinctrl-names	= "default";
-		pinctrl-0	= <>;
-		clock-names	= "mmc";
-		clocks		= <&mmc_clk>;
-	};
-
 	plb6 {
 		compatible = "ibm,plb6";
 		#address-cells = <2>;
@@ -501,6 +488,24 @@ MAL1: mcmal1 {
 					 /*RXDE*/  4 &UIC1_2 13 0x4>;
 		};
 
+		mmc0: mmc@20c0000 {
+			compatible	= "st,sdhci-stih407", "st,sdhci";
+			reg		= <0x020c0000 0x20000>;
+			reg-names	= "mmc";
+			interrupts	= <21 0x4>;
+			interrupt-parent = <&UIC1_3>;
+			interrupt-names	= "mmcirq";
+			pinctrl-names	= "default";
+			pinctrl-0	= <>;
+			clock-names	= "mmc";
+			clocks		= <&mmc_clk>;
+			bus-width	= <4>;
+			non-removable;
+			sd-uhs-sdr50;
+			sd-uhs-sdr104;
+			sd-uhs-ddr50;
+		};
+
 		opb {
 			compatible = "ibm,opb";
 			#address-cells = <1>;

arch/powerpc/configs/44x/fsp2_defconfig

@@ -92,8 +92,10 @@ CONFIG_MMC_DEBUG=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_OF_ARASAN=y
+CONFIG_MMC_SDHCI_ST=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_M41T80=y
+CONFIG_RESET_CONTROLLER=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y