Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/ui/gtk/util.c b/tools/perf/ui/gtk/util.c
index 7250d81..c47f5c3 100644
--- a/tools/perf/ui/gtk/util.c
+++ b/tools/perf/ui/gtk/util.c
@@ -1,11 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "../util.h"
-#include "../../util/util.h"
-#include "../../util/debug.h"
 #include "gtk.h"
 
+#include <stdlib.h>
 #include <string.h>
-
+#include <linux/zalloc.h>
 
 struct perf_gtk_context *pgctx;