Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig
index cd8a908..530fe7e 100644
--- a/drivers/platform/mellanox/Kconfig
+++ b/drivers/platform/mellanox/Kconfig
@@ -5,7 +5,7 @@
 
 menuconfig MELLANOX_PLATFORM
 	bool "Platform support for Mellanox hardware"
-	depends on X86 || ARM || COMPILE_TEST
+	depends on X86 || ARM || ARM64 || COMPILE_TEST
 	---help---
 	  Say Y here to get to see options for platform support for
 	  Mellanox systems. This option alone does not add any kernel code.
@@ -34,4 +34,14 @@
 	  to system resets operation, system reset causes monitoring and some
 	  kinds of mux selection.
 
+config MLXBF_TMFIFO
+	tristate "Mellanox BlueField SoC TmFifo platform driver"
+	depends on ARM64
+	depends on ACPI
+	depends on VIRTIO_CONSOLE && VIRTIO_NET
+	help
+	  Say y here to enable TmFifo support. The TmFifo driver provides
+          platform driver support for the TmFifo which supports console
+          and networking based on the virtio framework.
+
 endif # MELLANOX_PLATFORM