mlxsw: reg: Update RAUHT register with IPv6 support

Update the register, so the IPv6 neighbours could be programmed to the
device's neighbour table.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/reg.h

@@ -4960,6 +4960,7 @@ MLXSW_ITEM32(reg, rauht, rif, 0x00, 0, 16);
  * Access: Index
  */
 MLXSW_ITEM32(reg, rauht, dip4, 0x1C, 0x0, 32);
+MLXSW_ITEM_BUF(reg, rauht, dip6, 0x10, 16);
 
 enum mlxsw_reg_rauht_trap_action {
 	MLXSW_REG_RAUHT_TRAP_ACTION_NOP,
@@ -5024,6 +5025,15 @@ static inline void mlxsw_reg_rauht_pack4(char *payload,
 	mlxsw_reg_rauht_dip4_set(payload, dip);
 }
 
+static inline void mlxsw_reg_rauht_pack6(char *payload,
+					 enum mlxsw_reg_rauht_op op, u16 rif,
+					 const char *mac, const char *dip)
+{
+	mlxsw_reg_rauht_pack(payload, op, rif, mac);
+	mlxsw_reg_rauht_type_set(payload, MLXSW_REG_RAUHT_TYPE_IPV6);
+	mlxsw_reg_rauht_dip6_memcpy_to(payload, dip);
+}
+
 /* RALEU - Router Algorithmic LPM ECMP Update Register
  * ---------------------------------------------------
  * The register enables updating the ECMP section in the action for multiple