net: dsa: microchip: fix RGMII error in KSZ DSA driver

The driver should return RMII interface when XMII is running in RMII mode.

Fixes: 0ab7f6b ("net: dsa: microchip: ksz9477: use common xmii function")
Signed-off-by: Tristram Ha <[email protected]>
Acked-by: Arun Ramadoss <[email protected]>
Acked-by: Jerry Ray <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: triha2work

drivers/net/dsa/microchip/ksz_common.c

@@ -3142,7 +3142,7 @@ phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit)
 		else
 			interface = PHY_INTERFACE_MODE_MII;
 	} else if (val == bitval[P_RMII_SEL]) {
-		interface = PHY_INTERFACE_MODE_RGMII;
+		interface = PHY_INTERFACE_MODE_RMII;
 	} else {
 		interface = PHY_INTERFACE_MODE_RGMII;
 		if (data8 & P_RGMII_ID_EG_ENABLE)