Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index e55cbee..2c27627 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -25,8 +25,12 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+
 #include <asm/unaligned.h>
 
+#include <drm/drm_device.h>
+#include <drm/drm_util.h>
+
 #define ATOM_DEBUG
 
 #include "atom.h"