net: mtk_eth_soc: enable flow offload support for MT7986 SoC

Since Wireless Ethernet Dispatcher is now available for mt7986 in mt76,
enable hw flow support for MT7986 SoC.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/fdcaacd827938e6a8c4aa1ac2c13e46d2c08c821.1670072898.git.lorenzo@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -4593,6 +4593,7 @@ static const struct mtk_soc_data mt7986_data = {
 	.hw_features = MTK_HW_FEATURES,
 	.required_clks = MT7986_CLKS_BITMAP,
 	.required_pctl = false,
+	.offload_version = 2,
 	.hash_offset = 4,
 	.foe_entry_size = sizeof(struct mtk_foe_entry),
 	.txrx = {