hi6220: add ARM Mali GPU entry

Add the Mali-450 GPU entry in the HI6220 device tree based on the 3.10
kernel.  Also fix the mtcmos1 and mtcmos2 entries so they match the
regulator drivers and actually get initialised and usable by the GPU
driver.

Signed-off-by: Guillaume Tucker <guillaume.tucker@arm.com>

Author: gtucker-gmail

arch/arm64/boot/dts/hi6220.dtsi

@@ -991,6 +991,23 @@
                 };
         };
 
+	mali:mali@f4080000 {
+		compatible = "arm,mali-450", "arm,mali-utgard";
+		reg = <0x0 0x3f100000 0x0 0x00708000>;
+		clocks = <&clock_media HI6220_G3D_CLK>,
+			 <&clock_media HI6220_G3D_PCLK>;
+		clock-names = "clk_g3d", "pclk_g3d";
+		G3D_PD_VDD-supply  = <&mtcmos1>;
+		mali_def_freq = <500>;
+		pclk_freq = <144>;
+		dfs_steps = <2>;
+		dfs_lockprf = <1>;
+		dfs_limit_max_prf = <1>;
+		dfs_profile_num = <2>;
+		dfs_profiles = <250 3 0>, <500 1 0>;
+		mali_type = <2>;
+	};
+
         dwmmc_0: dwmmc0@f723d000 {
                 compatible = "hisilicon,hisi-dw-mshc";
                 num-slots = <0x1>;
@@ -1038,11 +1055,13 @@
 
                 mtcmos1: regulator@a1{
                         regulator-name = "G3D_PD_VDD";
+                        regulator-compatible = "mtcmos1";
                         hisilicon,ctrl-regs = <0x830 0x834 0x83c>;
                         hisilicon,ctrl-data = <1 0x1>;
                 };
                 mtcmos2: regulator@a2{
                         regulator-name = "SOC_MED";
+                        regulator-compatible = "mtcmos2";
                         hisilicon,ctrl-regs = <0x830 0x834 0x83c>;
                         hisilicon,ctrl-data = <2 0x1>;
                 };