net: dsa: xrs700x: provide own phylink MAC operations

Convert xrs700x to provide its own phylink MAC operations, thus
avoiding the shim layer in DSA's port.c. We need to provide stubs for
the mac_link_down() and mac_config() methods which are mandatory.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1rwfu8-007531-TG@rmk-PC.armlinux.org.ukSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/xrs700x/xrs700x.c

@@ -466,13 +466,25 @@ static void xrs700x_phylink_get_caps(struct dsa_switch *ds, int port,
 	}
 }
 
-static void xrs700x_mac_link_up(struct dsa_switch *ds, int port,
-				unsigned int mode, phy_interface_t interface,
+static void xrs700x_mac_config(struct phylink_config *config, unsigned int mode,
+			       const struct phylink_link_state *state)
+{
+}
+
+static void xrs700x_mac_link_down(struct phylink_config *config,
+				  unsigned int mode, phy_interface_t interface)
+{
+}
+
+static void xrs700x_mac_link_up(struct phylink_config *config,
 				struct phy_device *phydev,
+				unsigned int mode, phy_interface_t interface,
 				int speed, int duplex,
 				bool tx_pause, bool rx_pause)
 {
-	struct xrs700x *priv = ds->priv;
+	struct dsa_port *dp = dsa_phylink_to_port(config);
+	struct xrs700x *priv = dp->ds->priv;
+	int port = dp->index;
 	unsigned int val;
 
 	switch (speed) {
@@ -699,13 +711,18 @@ static int xrs700x_hsr_leave(struct dsa_switch *ds, int port,
 	return 0;
 }
 
+static const struct phylink_mac_ops xrs700x_phylink_mac_ops = {
+	.mac_config		= xrs700x_mac_config,
+	.mac_link_down		= xrs700x_mac_link_down,
+	.mac_link_up		= xrs700x_mac_link_up,
+};
+
 static const struct dsa_switch_ops xrs700x_ops = {
 	.get_tag_protocol	= xrs700x_get_tag_protocol,
 	.setup			= xrs700x_setup,
 	.teardown		= xrs700x_teardown,
 	.port_stp_state_set	= xrs700x_port_stp_state_set,
 	.phylink_get_caps	= xrs700x_phylink_get_caps,
-	.phylink_mac_link_up	= xrs700x_mac_link_up,
 	.get_strings		= xrs700x_get_strings,
 	.get_sset_count		= xrs700x_get_sset_count,
 	.get_ethtool_stats	= xrs700x_get_ethtool_stats,