arm64: dts: rockchip: adjust whitespace around '='

Fix whitespace coding style: use single space instead of tabs or
multiple spaces around '=' sign in property assignment.  No functional
changes (same DTB).
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220526204218.832029-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-evb.dts

@@ -55,7 +55,7 @@ backlight: backlight {
 	};
 
 	edp_panel: edp-panel {
-		compatible ="lg,lp079qx1-sp0v";
+		compatible = "lg,lp079qx1-sp0v";
 		backlight = <&backlight>;
 		enable-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
 		power-supply = <&vcc3v3_s0>;

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

@@ -88,7 +88,7 @@ backlight: backlight {
 	};
 
 	edp_panel: edp-panel {
-		compatible ="lg,lp079qx1-sp0v";
+		compatible = "lg,lp079qx1-sp0v";
 		backlight = <&backlight>;
 		enable-gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";