ARM: dts: imx6dl-prtvt7: Remove backlight enable gpio

The backlight power is controlled through the reg_bl_12v0 regulator.

Co-Developed-by: Robin van der Gracht <[e-mail]>
Signed-off-by: Robin van der Gracht <[e-mail]>
Signed-off-by: Oleksij Rempel <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx6dl-prtvt7.dts

···
 
 	backlight_lcd: backlight-lcd {
 		compatible = "pwm-backlight";
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_backlight>;
 		pwms = <&pwm1 0 500000>;
 		brightness-levels = <0 20 81 248 1000>;
 		default-brightness-level = <20>;
 		num-interpolated-steps = <21>;
 		power-supply = <&reg_bl_12v0>;
-		enable-gpios = <&gpio4 28 GPIO_ACTIVE_HIGH>;
 	};
 
 	keys {
···
 			MX6QDL_PAD_CSI0_DAT4__AUD3_TXC		0x130b0
 			MX6QDL_PAD_CSI0_DAT5__AUD3_TXD		0x110b0
 			MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS		0x130b0
-		>;
-	};
-
-	pinctrl_backlight: backlightgrp {
-		fsl,pins = <
-			MX6QDL_PAD_DISP0_DAT7__GPIO4_IO28	0x1b0b0
 		>;
 	};