GM: add permanent ACC fault signal (#27306)

* bump opendbc

* check signal

* bump opendbc
old-commit-hash: 6474e16a72

opendbc

@@ -1 +1 @@
-Subproject commit 6eab6cf6ad5ac69539037f4508582fbfaf239eab
+Subproject commit 510bfc06954e31257f8d8de17adf92f9a68a1b71

selfdrive/car/gm/carstate.py

@@ -100,7 +100,8 @@ class CarState(CarStateBase):
     ret.parkingBrake = pt_cp.vl["VehicleIgnitionAlt"]["ParkBrake"] == 1
     ret.cruiseState.available = pt_cp.vl["ECMEngineStatus"]["CruiseMainOn"] != 0
     ret.espDisabled = pt_cp.vl["ESPStatus"]["TractionControlOn"] != 1
-    ret.accFaulted = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.FAULTED
+    ret.accFaulted = (pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.FAULTED or
+                      pt_cp.vl["EBCMFrictionBrakeStatus"]["FrictionBrakeUnavailable"] == 1)
 
     ret.cruiseState.enabled = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] != AccState.OFF
     ret.cruiseState.standstill = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.STANDSTILL
@@ -155,6 +156,7 @@ class CarState(CarStateBase):
       ("RLWheelSpd", "EBCMWheelSpdRear"),
       ("RRWheelSpd", "EBCMWheelSpdRear"),
       ("MovingBackward", "EBCMWheelSpdRear"),
+      ("FrictionBrakeUnavailable", "EBCMFrictionBrakeStatus"),
       ("PRNDL2", "ECMPRDNL2"),
       ("ManualMode", "ECMPRDNL2"),
       ("LKADriverAppldTrq", "PSCMStatus"),
@@ -180,6 +182,7 @@ class CarState(CarStateBase):
       ("VehicleIgnitionAlt", 10),
       ("EBCMWheelSpdFront", 20),
       ("EBCMWheelSpdRear", 20),
+      ("EBCMFrictionBrakeStatus", 20),
       ("AcceleratorPedal2", 33),
       ("ASCMSteeringButton", 33),
       ("ECMEngineStatus", 100),