mt76: Integrate latest econet delivery
update_mt76_sdk_2021_07_26
Signed-off-by: Marek Puzyniak marek.puzyniak@iopsys.eu
@sukrus @anjancx @janusz @bartlomiej.grzeskowiak Please take a look how latest econet delivery can be integrated into package openwrt_core. Let have this as starting point for discussion.