HKG CAN-FD: add brake error signal (#762)

* add brake errors

* rename and add comment

* fix

hyundai_canfd.dbc

@@ -173,6 +173,7 @@ BO_ 373 TCS: 24 XXX
  SG_ DriverBrakingLowSens : 84|1@1+ (1,0) [0|1] "" XXX
  SG_ ACC_REQ : 68|1@0+ (1,0) [0|1] "" XXX
  SG_ ACCEL_REF_ACC : 48|11@1- (1,0) [0|1023] "" XXX
+ SG_ ACCEnable : 67|2@0+ (1,0) [0|3] "" XXX
 
 BO_ 352 ADRV_0x160: 16 ADRV
  SG_ CHECKSUM : 0|16@1+ (1,0) [0|65535] "" XXX
@@ -551,6 +552,7 @@ BO_ 506 CLUSTER_SPEED_LIMIT: 32 XXX
 CM_ SG_ 96 BRAKE_PRESSURE "User applied brake pedal pressure. Ramps from computer applied pressure on falling edge of cruise. Cruise cancels if !=0";
 CM_ SG_ 101 BRAKE_POSITION "User applied brake pedal position, max is ~700. Signed on some vehicles";
 CM_ SG_ 373 PROBABLY_EQUIP "aeb equip?";
+CM_ SG_ 373 ACCEnable "Likely a copy of CAN's TCS13->ACCEnable";
 CM_ SG_ 373 DriverBraking "Likely derived from BRAKE->BRAKE_POSITION";
 CM_ SG_ 373 DriverBrakingLowSens "Higher threshold version of DriverBraking";
 CM_ SG_ 352 SET_ME_9 "has something to do with AEB settings";
@@ -569,6 +571,7 @@ VAL_ 298 LKA_MODE 1 "warning only" 2 "assist" 6 "off" ;
 VAL_ 304 GEAR 1 "P" 2 "R" 3 "N" 4 "D" ;
 VAL_ 352 AEB_SETTING 1 "off" 2 "warning only" 3 "active assist" ;
 VAL_ 362 BLINKER_CONTROL 1 "hazards" 2 "hazards button backlight" 3 "left blinkers" 4 "right blinkers";
+VAL_ 373 ACCEnable 0 "SCC ready" 1 "SCC temp fault" 2 "SCC permanent fault" 3 "SCC permanent fault, communication issue";
 VAL_ 416 ACCMode 0 "off" 1 "enabled" 2 "driver_override" 3 "off_maybe_fault" 4 "cancelled" ;
 VAL_ 426 CRUISE_BUTTONS 0 "none" 1 "res_accel" 2 "set_decel" 3 "gap_distance" 4 "pause_resume" ;
 VAL_ 463 CRUISE_BUTTONS 0 "none" 1 "res_accel" 2 "set_decel" 3 "gap_distance" 4 "pause_resume" ;