net: mscc: ocelot: use ipv6 in the aggregation code

IPv6 header information is not currently part of the entropy source for
the 4-bit aggregation code used for LAG offload, even though it could be.
The hardware reference manual says about these fields:

ANA::AGGR_CFG.AC_IP6_TCPUDP_PORT_ENA
Use IPv6 TCP/UDP port when calculating aggregation code. Configure
identically for all ports. Recommended value is 1.

ANA::AGGR_CFG.AC_IP6_FLOW_LBL_ENA
Use IPv6 flow label when calculating AC. Configure identically for all
ports. Recommended value is 1.

Integration with the xmit_hash_policy of the bonding interface is TBD.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mscc/ocelot.c

@@ -1615,7 +1615,10 @@ int ocelot_init(struct ocelot *ocelot)
 	ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
 			     ANA_AGGR_CFG_AC_DMAC_ENA |
 			     ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
-			     ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, ANA_AGGR_CFG);
+			     ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA |
+			     ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA |
+			     ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA,
+			     ANA_AGGR_CFG);
 
 	/* Set MAC age time to default value. The entry is aged after
 	 * 2*AGE_PERIOD