mt76: mt7921: fix boolreturn.cocci warning

./drivers/net/wireless/mediatek/mt76/mt7921/sdio_mac.c: 223: 8-9: WARNING:
return of 0/1 in function 'mt7921s_tx_status_data' with return type bool

Return statements in functions returning bool should use true/false
instead of 1/0.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -219,5 +219,5 @@ bool mt7921s_tx_status_data(struct mt76_dev *mdev, u8 *update)
 	mt7921_mac_sta_poll(dev);
 	mt7921_mutex_release(dev);
 
-	return 0;
+	return false;
 }