ARM: dts: imx6sl: Adding cpu frequency and VDDSOC/PU table.

Device tree for iMX6SL doesn't have an existing cpu frequency table
as well as the VDDSOC/PU.
Signed-off-by: NJohn Tobias <john.tobias.ph@gmail.com>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6sl.dtsi

@@ -39,6 +39,27 @@
 			device_type = "cpu";
 			reg = <0x0>;
 			next-level-cache = <&L2>;
+			operating-points = <
+				/* kHz    uV */
+				996000  1275000
+				792000  1175000
+				396000  975000
+			>;
+			fsl,soc-operating-points = <
+				/* ARM kHz      SOC-PU uV */
+				996000          1225000
+				792000          1175000
+				396000          1175000
+			>;
+			clock-latency = <61036>; /* two CLK32 periods */
+			clocks = <&clks IMX6SL_CLK_ARM>, <&clks IMX6SL_CLK_PLL2_PFD2>,
+					<&clks IMX6SL_CLK_STEP>, <&clks IMX6SL_CLK_PLL1_SW>,
+					<&clks IMX6SL_CLK_PLL1_SYS>;
+			clock-names = "arm", "pll2_pfd2_396m", "step",
+				      "pll1_sw", "pll1_sys";
+			arm-supply = <&reg_arm>;
+			pu-supply = <&reg_pu>;
+			soc-supply = <&reg_soc>;
 		};
 	};