Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/ui/browsers/map.c b/tools/perf/ui/browsers/map.c
index 5b8b8c6..3d49b91 100644
--- a/tools/perf/ui/browsers/map.c
+++ b/tools/perf/ui/browsers/map.c
@@ -2,17 +2,19 @@
 #include <elf.h>
 #include <inttypes.h>
 #include <sys/ttydefaults.h>
+#include <stdlib.h>
 #include <string.h>
 #include <linux/bitops.h>
-#include "../../util/util.h"
 #include "../../util/debug.h"
+#include "../../util/map.h"
+#include "../../util/dso.h"
 #include "../../util/symbol.h"
 #include "../browser.h"
 #include "../helpline.h"
 #include "../keysyms.h"
 #include "map.h"
 
-#include "sane_ctype.h"
+#include <linux/ctype.h>
 
 struct map_browser {
 	struct ui_browser b;