net: mvpp2: cls: Add missing MAC_DA field extraction

PPv2's classifier supports extracting the MAC Destination Address from the
L2 header to perform RSS and flow steering. Add the missing case when
setting the Header Extracted Key fields in the flow table.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c

@@ -555,6 +555,9 @@ static int mvpp2_flow_set_hek_fields(struct mvpp2_cls_flow_entry *fe,
 
 	for_each_set_bit(i, &hash_opts, MVPP22_CLS_HEK_N_FIELDS) {
 		switch (BIT(i)) {
+		case MVPP22_CLS_HEK_OPT_MAC_DA:
+			field_id = MVPP22_CLS_FIELD_MAC_DA;
+			break;
 		case MVPP22_CLS_HEK_OPT_VLAN:
 			field_id = MVPP22_CLS_FIELD_VLAN;
 			break;