[P8023]: Fix tainting of kernel.

Missing license tag.
I've assumed this is GPL.  (It could also use a MODULE_AUTHOR)

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/802/p8023.c b/net/802/p8023.c
index d23e906..53cf057 100644
--- a/net/802/p8023.c
+++ b/net/802/p8023.c
@@ -59,3 +59,5 @@
 
 EXPORT_SYMBOL(destroy_8023_client);
 EXPORT_SYMBOL(make_8023_client);
+
+MODULE_LICENSE("GPL");