ARM: dts: sun6i: Change framebuffer node names to avoid warnings

The simple-framebuffer nodes have a unit address, but no reg property which
generates a warning when compiling it with DTC.

Change the simple-framebuffer node names so that there is no warnings on
this anymore.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

arch/arm/boot/dts/sun6i-a31.dtsi

@@ -62,7 +62,7 @@ chosen {
 		#size-cells = <1>;
 		ranges;
 
-		simplefb_hdmi: framebuffer@0 {
+		simplefb_hdmi: framebuffer-lcd0-hdmi {
 			compatible = "allwinner,simple-framebuffer",
 				     "simple-framebuffer";
 			allwinner,pipeline = "de_be0-lcd0-hdmi";
@@ -73,7 +73,7 @@ simplefb_hdmi: framebuffer@0 {
 			status = "disabled";
 		};
 
-		simplefb_lcd: framebuffer@1 {
+		simplefb_lcd: framebuffer-lcd0 {
 			compatible = "allwinner,simple-framebuffer",
 				     "simple-framebuffer";
 			allwinner,pipeline = "de_be0-lcd0";