ARM: tegra: Add missing power-supply for panels

Tegra124 Nyan and Venice 2 boards were missing the required power-supply
property in their display panel device tree nodes. Add these properties
to fix validation errors.

Signed-off-by: Thierry Reding <[e-mail]>

arch/arm/boot/dts/tegra124-nyan-big.dts

···
 			aux-bus {
 				panel: panel {
 					compatible = "auo,b133xtn01";
+					power-supply = <&vdd_3v3_panel>;
 					backlight = <&backlight>;
 				};
 			};

arch/arm/boot/dts/tegra124-nyan-blaze.dts

···
 			aux-bus {
 				panel: panel {
 					compatible = "samsung,ltn140at29-301";
+					power-supply = <&vdd_3v3_panel>;
 					backlight = <&backlight>;
 				};
 			};

arch/arm/boot/dts/tegra124-venice2.dts

···
 			aux-bus {
 				panel: panel {
 					compatible = "lg,lp129qe";
+					power-supply = <&vdd_3v3_panel>;
 					backlight = <&backlight>;
 				};
 			};