Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index c4a5c9e..7800e12 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  Copyright © 2015 Broadcom
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #ifndef __SOC_RASPBERRY_FIRMWARE_H__
@@ -76,6 +73,8 @@
 	RPI_FIRMWARE_GET_CUSTOMER_OTP =                       0x00030021,
 	RPI_FIRMWARE_GET_DOMAIN_STATE =                       0x00030030,
 	RPI_FIRMWARE_GET_THROTTLED =                          0x00030046,
+	RPI_FIRMWARE_GET_CLOCK_MEASURED =                     0x00030047,
+	RPI_FIRMWARE_NOTIFY_REBOOT =                          0x00030048,
 	RPI_FIRMWARE_SET_CLOCK_STATE =                        0x00038001,
 	RPI_FIRMWARE_SET_CLOCK_RATE =                         0x00038002,
 	RPI_FIRMWARE_SET_VOLTAGE =                            0x00038003,
@@ -89,6 +88,8 @@
 	RPI_FIRMWARE_SET_GPIO_CONFIG =                        0x00038043,
 	RPI_FIRMWARE_GET_PERIPH_REG =                         0x00030045,
 	RPI_FIRMWARE_SET_PERIPH_REG =                         0x00038045,
+	RPI_FIRMWARE_GET_POE_HAT_VAL =                        0x00030049,
+	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00030050,
 
 
 	/* Dispmanx TAGS */