ARM: dts: omap3-evm: Add DSS {vdds_dsi,vdda_video}-supply references

This commit eliminates two dummy regulator assignments.
Signed-off-by: NDerald D. Woods <woods.technical@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-evm-processor-common.dtsi

@@ -15,6 +15,8 @@
 };
 
 &dss {
+	vdds_dsi-supply = <&vpll2>;
+	vdda_video-supply = <&lcd_3v3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <
 		&dss_dpi_pins1