Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/boot/dts/imx6dl-ts4900.dts b/arch/arm/boot/dts/imx6dl-ts4900.dts
index cc01a7a..3d60cc7 100644
--- a/arch/arm/boot/dts/imx6dl-ts4900.dts
+++ b/arch/arm/boot/dts/imx6dl-ts4900.dts
@@ -49,6 +49,7 @@
 
 	/* Will be filled by the bootloader */
 	memory@10000000 {
+		device_type = "memory";
 		reg = <0x10000000 0>;
 	};
 };