mt76: mt7915: add missing bh-disable around tx napi enable/schedule

napi_schedule() can call __raise_softirq_irqoff(), which can perform softirq
handling, so it must not be called in a pure process context with BH enabled.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/mac.c

@@ -2183,8 +2183,10 @@ void mt7915_mac_reset_work(struct work_struct *work)
 
 	mt76_worker_enable(&dev->mt76.tx_worker);
 
+	local_bh_disable();
 	napi_enable(&dev->mt76.tx_napi);
 	napi_schedule(&dev->mt76.tx_napi);
+	local_bh_enable();
 
 	ieee80211_wake_queues(mt76_hw(dev));
 	if (ext_phy)