Init DutlinkSerial driver

contrib/drivers/dutlink/jumpstarter_driver_dutlink/driver.py

@@ -82,6 +82,18 @@ def control(self, direction, ty, actions, action, value):
             return str_value
 
 
+@dataclass(kw_only=True)
+class DutlinkSerial(DutlinkConfig, PySerial):
+    url: str | None = field(init=False, default=None)
+
+    def __post_init__(self):
+        super().__post_init__()
+
+        self.url = self.tty
+
+        super(PySerial, self).__post_init__()
+
+
 @dataclass(kw_only=True)
 class DutlinkPower(DutlinkConfig, PowerInterface, Driver):
     last_action: str | None = field(default=None)
@@ -199,7 +211,7 @@ async def write(self, src: str):
                 async for chunk in res:
                     await stream.send(chunk)
                     if total_bytes > next_print:
-                        log.debug(f"{self.storage_device} written {total_bytes/(1024*1024)} MB")
+                        log.debug(f"{self.storage_device} written {total_bytes / (1024 * 1024)} MB")
                         next_print += 50 * 1024 * 1024
                     total_bytes += len(chunk)
 
@@ -252,13 +264,12 @@ def __post_init__(self):
                 self.children["console"] = PySerial(url=self.alternate_console, baudrate=self.baudrate)
             except SerialException:
                 log.info(
-                    f"failed to open alternate console {self.alternate_console} "
-                    "but trying to power on the target once"
+                    f"failed to open alternate console {self.alternate_console} but trying to power on the target once"
                 )
                 self.children["power"].on()
                 time.sleep(5)
                 self.children["console"] = PySerial(url=self.alternate_console, baudrate=self.baudrate)
                 self.children["power"].off()
         else:
             # otherwise look up the tty console provided by dutlink
-            self.children["console"] = PySerial(url=self.tty, baudrate=self.baudrate)
+            self.children["console"] = DutlinkSerial(serial=self.serial, baudrate=self.baudrate)