add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/net/nsh/Makefile
..
..
@@ -1 +1,2 @@
1
+# SPDX-License-Identifier: GPL-2.0-only
1
2
 obj-$(CONFIG_NET_NSH) += nsh.o