ARM: dts: omap3: overo: remove unneded unit names in display nodes

This patch fixes the following DTC warnings for omap3-overo-gallop43.dtb,
omap3-overo-chestnut43.dtb, omap3-overo-storm-chestnut43.dtb,
omap3-overo-palo43.dtb, and omap3-overo-storm-palo43.dtb:

"display@0 has a unit name, but no reg property"

Signed-off-by: Javier Martinez Canillas <[e-mail]>
Signed-off-by: Tony Lindgren <[e-mail]>

arch/arm/boot/dts/omap3-overo-common-lcd35.dtsi

···
 	pinctrl-names = "default";
 	pinctrl-0 = <&mcspi1_pins>;
 
-	lcd0: display@0 {
+	lcd0: display {
 		compatible = "lgphilips,lb035q02";
 		label = "lcd35";
 

arch/arm/boot/dts/omap3-overo-common-lcd43.dtsi

···
 		display0 = &lcd0;
 	};
 
-	lcd0: display@0 {
+	lcd0: display {
 		compatible = "samsung,lte430wq-f0c", "panel-dpi";
 		label = "lcd43";