net: dsa: mv88e6xxx: populate supported_interfaces and mac_capabilities

Populate the supported interfaces and MAC capabilities for the
Marvell MV88E6xxx DSA switches in preparation to using these for the
validation functionality.

Patch co-authored by Marek.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Marek Behún <kabel@kernel.org> [ fixed 6341 and 6393x ]
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/chip.h

@@ -611,6 +611,8 @@ struct mv88e6xxx_ops {
 	const struct mv88e6xxx_ptp_ops *ptp_ops;
 
 	/* Phylink */
+	void (*phylink_get_caps)(struct mv88e6xxx_chip *chip, int port,
+				 struct phylink_config *config);
 	void (*phylink_validate)(struct mv88e6xxx_chip *chip, int port,
 				 unsigned long *mask,
 				 struct phylink_link_state *state);

drivers/net/dsa/mv88e6xxx/port.h

@@ -42,6 +42,11 @@
 #define MV88E6XXX_PORT_STS_TX_PAUSED		0x0020
 #define MV88E6XXX_PORT_STS_FLOW_CTL		0x0010
 #define MV88E6XXX_PORT_STS_CMODE_MASK		0x000f
+#define MV88E6XXX_PORT_STS_CMODE_MII_PHY	0x0001
+#define MV88E6XXX_PORT_STS_CMODE_MII		0x0002
+#define MV88E6XXX_PORT_STS_CMODE_GMII		0x0003
+#define MV88E6XXX_PORT_STS_CMODE_RMII_PHY	0x0004
+#define MV88E6XXX_PORT_STS_CMODE_RMII		0x0005
 #define MV88E6XXX_PORT_STS_CMODE_RGMII		0x0007
 #define MV88E6XXX_PORT_STS_CMODE_100BASEX	0x0008
 #define MV88E6XXX_PORT_STS_CMODE_1000BASEX	0x0009