W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the DSA loopback fixed PHY module.

Signed-off-by: Breno Leitao <leitao@debian.org>
---
 drivers/net/dsa/dsa_loop_bdinfo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/dsa_loop_bdinfo.c b/drivers/net/dsa/dsa_loop_bdinfo.c
index 237066d30704..fd412ae4e84b 100644
--- a/drivers/net/dsa/dsa_loop_bdinfo.c
+++ b/drivers/net/dsa/dsa_loop_bdinfo.c
@@ -32,4 +32,5 @@ static int __init dsa_loop_bdinfo_init(void)
 }
 arch_initcall(dsa_loop_bdinfo_init)
 
+MODULE_DESCRIPTION("DSA loopback fixed PHY library");
 MODULE_LICENSE("GPL");
-- 
2.39.3