net: pcs-lynx: add support for 10GBASER

Add support in the Lynx PCS module for the 10GBASE-R mode which is only
used to get the link state, since it offers a single fixed speed.

Signed-off-by: Ioana Ciornei <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/pcs/pcs-lynx.c

···
 	case PHY_INTERFACE_MODE_USXGMII:
 		lynx_pcs_get_state_usxgmii(lynx->mdio, state);
 		break;
+	case PHY_INTERFACE_MODE_10GBASER:
+		phylink_mii_c45_pcs_get_state(lynx->mdio, state);
+		break;
 	default:
 		break;
 	}
···
 		break;
 	case PHY_INTERFACE_MODE_USXGMII:
 		return lynx_pcs_config_usxgmii(lynx->mdio, mode, advertising);
+	case PHY_INTERFACE_MODE_10GBASER:
+		/* Nothing to do here for 10GBASER */
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}