arm64: dts: rockchip: Kill off "simple-panel" compatibles

"simple-panel" is a Linux driver and has never been an accepted upstream
compatible string, so remove it.

Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200117230851.25434-1-robh@kernel.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts

@@ -18,7 +18,7 @@ / {
 		     "google,bob", "google,gru", "rockchip,rk3399";
 
 	edp_panel: edp-panel {
-		compatible = "boe,nv101wxmn51", "simple-panel";
+		compatible = "boe,nv101wxmn51";
 		backlight = <&backlight>;
 		power-supply = <&pp3300_disp>;
 

arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts

@@ -39,7 +39,7 @@ p3_3v_dig: p3-3v-dig {
 	};
 
 	edp_panel: edp-panel {
-		compatible = "sharp,lq123p1jx31", "simple-panel";
+		compatible = "sharp,lq123p1jx31";
 		backlight = <&backlight>;
 		power-supply = <&pp3300_disp>;
 

arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator.dts

@@ -84,7 +84,7 @@ backlight: backlight {
 	};
 
 	edp_panel: edp-panel {
-		compatible ="lg,lp079qx1-sp0v", "simple-panel";
+		compatible ="lg,lp079qx1-sp0v";
 		backlight = <&backlight>;
 		enable-gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";