fix a problem with dcd 13uxx dcd_pipe_clear_stall that should clear toggle for buffer0 (instead of active buffer)

as the next transfer is always forced to be happened on buffer0

demos/device/src/mscd_app_romdisk.c

@@ -105,7 +105,7 @@ uint16_t tusbd_msc_read10_cb (uint8_t coreid, uint8_t lun, void** pp_buffer, uin
   return 1;
 }
 
-// Stall write10 as this is readonly disk
+// Stall write10 by return 0, as this is readonly disk
 uint16_t tusbd_msc_write10_cb(uint8_t coreid, uint8_t lun, void** pp_buffer, uint32_t lba, uint16_t block_count)
 {
   (*pp_buffer) = NULL;