net: dsa: remove ds_to_priv

Access the priv member of the dsa_switch structure directly, instead of
having an unnecessary helper.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/bcm_sf2.h

diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h
index afe5668..46c4ea7 100644
--- a/drivers/net/dsa/bcm_sf2.h
+++ b/drivers/net/dsa/bcm_sf2.h
@@ -101,7 +101,7 @@
 
 static inline struct bcm_sf2_priv *bcm_sf2_to_priv(struct dsa_switch *ds)
 {
-	struct b53_device *dev = ds_to_priv(ds);
+	struct b53_device *dev = ds->priv;
 
 	return dev->priv;
 }