rockchip: rock2: dts: Make changes for U-Boot

Add the required pre-relocation tags and SDRAM init information for U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/rk3288-rock2-square.dts

@@ -96,6 +96,7 @@
 };
 
 &sdmmc {
+	u-boot,dm-pre-reloc;
 	bus-width = <4>;
 	cap-mmc-highspeed;
 	cap-sd-highspeed;
@@ -138,6 +139,7 @@
 };
 
 &pinctrl {
+	u-boot,dm-pre-reloc;
 	ir {
 		ir_int: ir-int {
 			rockchip,pins = <8 1 RK_FUNC_GPIO &pcfg_pull_up>;
@@ -169,6 +171,8 @@
 
 &uart2 {
 	status = "okay";
+	u-boot,dm-pre-reloc;
+	reg-shift = <2>;
 };
 
 &usbphy {
@@ -178,3 +182,20 @@
 &usb_host0_ehci {
 	status = "okay";
 };
+
+&dmc {
+	rockchip,num-channels = <2>;
+	rockchip,pctl-timing = <0x29a 0xc8 0x1f8 0x42 0x4e 0x4 0xea 0xa
+		0x5 0x0 0xa 0x7 0x19 0x24 0xa 0x7
+		0x5 0xa 0x5 0x200 0x5 0x10 0x40 0x0
+		0x1 0x7 0x7 0x4 0xc 0x43 0x100 0x0
+		0x5 0x0>;
+	rockchip,phy-timing = <0x48f9aab4 0xea0910 0x1002c200
+		0xa60 0x40 0x10 0x0>;
+	rockchip,sdram-channel = /bits/ 8 <0x1 0xa 0x3 0x2 0x1 0x0 0xf 0xf>;
+	rockchip,sdram-params = <0x30B25564 0x627 3 666000000 3 9 1>;
+};
+
+&gpio7 {
+	u-boot,dm-pre-reloc;
+};