ARM: dts: imx6qdl: Add power-domain phandle to CODA device node

The CODA960 VPU is part of the PU power domain. Add power-domains
phandle so it can be associated with the PU generic pm domain for
power gating.

Signed-off-by: Philipp Zabel <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx6qdl.dtsi

···
 				clocks = <&clks IMX6QDL_CLK_VPU_AXI>,
 					 <&clks IMX6QDL_CLK_MMDC_CH0_AXI>;
 				clock-names = "per", "ahb";
+				power-domains = <&gpc 1>;
 				resets = <&src 1>;
 				iram = <&ocram>;
 			};