Update mmcsd_host.h

components/drivers/include/drivers/mmcsd_host.h

@@ -111,7 +111,7 @@ struct rt_mmcsd_host {
 	rt_uint32_t	max_blk_count;  /* maximum block count */
 
 	rt_uint32_t   spi_use_crc;
-	struct rt_semaphore  bus_lock;
+	struct rt_mutex  bus_lock;
 	struct rt_semaphore  sem_ack;
 
 	rt_uint32_t       sdio_irq_num;