net: mvpp2: Add missing PHY_INTERFACE_MODE_RGMII_ID

Add a missing occurrance of PHY_INTERFACE_MODE_RGMII_ID, which should
be handled identical to PHY_INTERFACE_MODE_RGMII.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Stefan Chulski <stefanc@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/mvpp2.c

@@ -2886,6 +2886,7 @@ static void mvpp2_port_mii_set(struct mvpp2_port *port)
 		val |= MVPP2_GMAC_INBAND_AN_MASK;
 		break;
 	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
 		val |= MVPP2_GMAC_PORT_RGMII_MASK;
 	default:
 		val &= ~MVPP2_GMAC_PCS_ENABLE_MASK;