[PATCH -next] net: dsa: Fix non static symbol warning

[weiyj_lk]

From: Wei Yongjun <yongjun_...@trendmicro.com.cn>

Fixes the following sparse warning:

net/dsa/dsa2.c:680:6: warning:
 symbol '_dsa_unregister_switch' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.com.cn>
---
 net/dsa/dsa2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 78e4c01..f30bad9 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -677,7 +677,7 @@ int dsa_register_switch(struct dsa_switch *ds, struct 
device_node *np)
 }
 EXPORT_SYMBOL_GPL(dsa_register_switch);
 
-void _dsa_unregister_switch(struct dsa_switch *ds)
+static void _dsa_unregister_switch(struct dsa_switch *ds)
 {
        struct dsa_switch_tree *dst = ds->dst;