feature: add firmware type to bitaxe.

pyasic/miners/backends/bitaxe.py

@@ -2,6 +2,7 @@ from typing import List, Optional
 
 from pyasic import APIError, MinerConfig
 from pyasic.data import AlgoHashRate, Fan, HashBoard, HashUnit
+from pyasic.device import MinerFirmware
 from pyasic.miners.base import BaseMiner
 from pyasic.miners.data import DataFunction, DataLocations, DataOptions, WebAPICommand
 from pyasic.web.bitaxe import BitAxeWebAPI
@@ -46,6 +47,8 @@ class BitAxe(BaseMiner):
     web: BitAxeWebAPI
     _web_cls = BitAxeWebAPI
 
+    firmware = MinerFirmware.STOCK
+
     data_locations = BITAXE_DATA_LOC
 
     async def reboot(self) -> bool: