net: mvpp2: clean up mvpp2_phylink_validate()

mvpp2_phylink_validate() no longer needs to check for
PHY_INTERFACE_MODE_NA as phylink will walk the supported interface
types to discover the link mode capabilities. Remove these checks.
Signed-off-by: NRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -6280,14 +6280,12 @@ static void mvpp2_phylink_validate(struct phylink_config *config,
 	switch (state->interface) {
 	case PHY_INTERFACE_MODE_10GBASER:
 	case PHY_INTERFACE_MODE_XAUI:
-	case PHY_INTERFACE_MODE_NA:
 		if (mvpp2_port_supports_xlg(port)) {
 			phylink_set_10g_modes(mask);
 			phylink_set(mask, 10000baseKR_Full);
 		}
-		if (state->interface != PHY_INTERFACE_MODE_NA)
-			break;
-		fallthrough;
+		break;
+
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
 	case PHY_INTERFACE_MODE_RGMII_RXID:
@@ -6299,19 +6297,18 @@ static void mvpp2_phylink_validate(struct phylink_config *config,
 		phylink_set(mask, 100baseT_Full);
 		phylink_set(mask, 1000baseT_Full);
 		phylink_set(mask, 1000baseX_Full);
-		if (state->interface != PHY_INTERFACE_MODE_NA)
-			break;
-		fallthrough;
+		break;
+
 	case PHY_INTERFACE_MODE_1000BASEX:
 		phylink_set(mask, 1000baseT_Full);
 		phylink_set(mask, 1000baseX_Full);
-		if (state->interface != PHY_INTERFACE_MODE_NA)
-			break;
-		fallthrough;
+		break;
+
 	case PHY_INTERFACE_MODE_2500BASEX:
 		phylink_set(mask, 2500baseT_Full);
 		phylink_set(mask, 2500baseX_Full);
 		break;
+
 	default:
 		goto empty_set;
 	}