Hyundai CAN-FD: use common PT bus function (#27268)

* Hyundai CAN-FD: PT bus detection cleanup

* Do this when ICE CAN-FD is supported!

* Only needs to be checked for non-HDA2, HDA2 uses 0x1cf

* Unused

Co-authored-by: Shane Smiskol <shane@smiskol.com>

* Keep it the same for now

---------

Co-authored-by: Shane Smiskol <shane@smiskol.com>

selfdrive/car/hyundai/carstate.py

@@ -6,6 +6,7 @@ from cereal import car
 from common.conversions import Conversions as CV
 from opendbc.can.parser import CANParser
 from opendbc.can.can_define import CANDefine
+from selfdrive.car.hyundai.hyundaicanfd import get_e_can_bus
 from selfdrive.car.hyundai.values import HyundaiFlags, CAR, DBC, FEATURES, CAMERA_SCC_CAR, CANFD_CAR, EV_CAR, HYBRID_CAR, Buttons, CarControllerParams
 from selfdrive.car.interfaces import CarStateBase
 
@@ -515,8 +516,7 @@ class CarState(CarStateBase):
         ("ACCELERATOR_BRAKE_ALT", 100),
       ]
 
-    bus = 5 if CP.flags & HyundaiFlags.CANFD_HDA2 else 4
-    return CANParser(DBC[CP.carFingerprint]["pt"], signals, checks, bus)
+    return CANParser(DBC[CP.carFingerprint]["pt"], signals, checks, get_e_can_bus(CP))
 
   @staticmethod
   def get_cam_can_parser_canfd(CP):