ARM: dts: bcm283x: Add missing properties to the PWR LED

This adds the missing properties to the PWR LED for the RPi 3 & 4 boards,
which are already set for the other boards. Without them we will lose
the LED state after suspend.

Signed-off-by: Stefan Wahren <[e-mail]>
Tested-by: Peter Robinson <[e-mail]>
Signed-off-by: Florian Fainelli <[e-mail]>

arch/arm/boot/dts/bcm2711-rpi-4-b.dts

···
 		pwr {
 			label = "PWR";
 			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
 		};
 	};
 

arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts

···
 		pwr {
 			label = "PWR";
 			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
 		};
 	};
 };

arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts

···
 		pwr {
 			label = "PWR";
 			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
 		};
 	};