kernel: fix mtk_eth_soc flow accounting for MT7986

This was accidentally dropped when MT7981 support was added

Signed-off-by: Felix Fietkau <[email protected]>

target/linux/generic/pending-5.15/731-net-ethernet-mediatek-ppe-add-support-for-flow-accou.patch

@@ -88,6 +88,14 @@ v2: fix wrong variable name in return value check spotted by Denis Kirjanov
  	.txrx = {
  		.txd_size = sizeof(struct mtk_tx_dma_v2),
  		.rxd_size = sizeof(struct mtk_rx_dma_v2),
+@@ -4847,6 +4850,7 @@ static const struct mtk_soc_data mt7986_
+ 	.offload_version = 2,
+ 	.hash_offset = 4,
+ 	.foe_entry_size = sizeof(struct mtk_foe_entry),
++	.has_accounting = true,
+ 	.txrx = {
+ 		.txd_size = sizeof(struct mtk_tx_dma_v2),
+ 		.rxd_size = sizeof(struct mtk_rx_dma_v2),
 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
 @@ -1014,6 +1014,8 @@ struct mtk_reg_map {