add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/gpio/.gitignore
..
..
@@ -1,4 +1,6 @@
1
+# SPDX-License-Identifier: GPL-2.0-only
1
2
 gpio-event-mon
2
3
 gpio-hammer
4
+gpio-watch
3
5
 lsgpio
4
-
6
+include/linux/gpio.h