Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/boot/dts/bcm2835-rpi-a.dts b/arch/arm/boot/dts/bcm2835-rpi-a.dts
index 067d1f0..17fdd48 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
@@ -8,6 +8,11 @@
 	compatible = "raspberrypi,model-a", "brcm,bcm2835";
 	model = "Raspberry Pi Model A";
 
+	memory@0 {
+		device_type = "memory";
+		reg = <0 0x10000000>;
+	};
+
 	leds {
 		act {
 			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
@@ -94,6 +99,8 @@
 
 &hdmi {
 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
+	status = "okay";
 };
 
 &pwm {
@@ -102,6 +109,13 @@
 	status = "okay";
 };
 
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+	bus-width = <4>;
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_gpio14>;