Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/sound/soc/soc-acpi.c b/sound/soc/soc-acpi.c
index 4fb29f0..444ce06 100644
--- a/sound/soc/soc-acpi.c
+++ b/sound/soc/soc-acpi.c
@@ -4,6 +4,8 @@
 //
 // Copyright (c) 2013-15, Intel Corporation.
 
+#include <linux/export.h>
+#include <linux/module.h>
 #include <sound/soc-acpi.h>
 
 struct snd_soc_acpi_mach *