mt76: mt7921: run mt7921_mcu_fw_log_2_host holding mt76 mutex

Wake the chip before configuring the mcu log level

Fixes: 1d8efc74 ("mt76: mt7921: introduce Runtime PM support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c

@@ -9,10 +9,13 @@ mt7921_fw_debug_set(void *data, u64 val)
 {
 	struct mt7921_dev *dev = data;
 
-	dev->fw_debug = (u8)val;
+	mt7921_mutex_acquire(dev);
 
+	dev->fw_debug = (u8)val;
 	mt7921_mcu_fw_log_2_host(dev, dev->fw_debug);
 
+	mt7921_mutex_release(dev);
+
 	return 0;
 }