HRV fix gas pedal signal (#1582)
HRV fix gas pedal signal (#1582)

Seperate CAR.HRV from CAR.FIT
HRV used GAS_PEDAL, not GAS_PEDAL_2 for FIT
commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot