[PATCH 1/4] netfilter: arp_tables: restore a SPDX identifier

[Christoph Hellwig]

This was accidentally removed in an unrelated commit.

Fixes: c2f12630c60f ("netfilter: switch nf_setsockopt to sockptr_t")
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 net/ipv4/netfilter/arp_tables.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index f5b26ef1782001..9a1567dbc022b6 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1,4 +1,4 @@
-
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Packet matching code for ARP packets.
  *
-- 
2.27.0