net: dsa: remove dsa_switch_alloc helper

Now that ports are dynamically listed in the fabric, there is no need
to provide a special helper to allocate the dsa_switch structure. This
will give more flexibility to drivers to embed this structure as they
wish in their private structure.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

drivers/net/dsa/mv88e6xxx/chip.c

@@ -4978,10 +4978,12 @@ static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip)
 	struct device *dev = chip->dev;
 	struct dsa_switch *ds;
 
-	ds = dsa_switch_alloc(dev, mv88e6xxx_num_ports(chip));
+	ds = devm_kzalloc(dev, sizeof(*ds), GFP_KERNEL);
 	if (!ds)
 		return -ENOMEM;
 
+	ds->dev = dev;
+	ds->num_ports = mv88e6xxx_num_ports(chip);
 	ds->priv = chip;
 	ds->dev = dev;
 	ds->ops = &mv88e6xxx_switch_ops;