net: dsa: remove useless args of dsa_cpu_dsa_setup

dsa_cpu_dsa_setup currently takes 4 arguments but they are all available
from the dsa_port argument. Remove all others.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 306cff2..2873d91 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -101,8 +101,7 @@
 };
 
 /* dsa.c */
-int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
-		      struct dsa_port *dport, int port);
+int dsa_cpu_dsa_setup(struct dsa_port *port);
 void dsa_cpu_dsa_destroy(struct dsa_port *dport);
 const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol);
 int dsa_cpu_port_ethtool_setup(struct dsa_port *cpu_dp);