[][[Merlin][AX3000][MT76][Performance] DBDC 5G HE160,peak throughput test , HWNAT CPU idle only 50.77%]

Fix CPU idle only 50.77% issue when binding

DL: MT76 handle txfree notify interrupt
    when all token are belongs to wed
UL: Merlin Rx data interrupt bit changes
    to bit[19:18] from bit[23:22] when wed on


[[Info to Customer]]

Change-Id: Icbfb4e0b6714e74ce2f7c501078bf37d164bda0e
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6563470
Build: srv_hbgsm110
2 files changed