Increase max speed by 5 on short press

Added function to increase the value of the max speed by 5 instead of 1 by taping the "Max" speed icon in the onroad UI.

selfdrive/controls/lib/drive_helpers.py

@@ -52,13 +52,13 @@ class VCruiseHelper:
   def v_cruise_initialized(self):
     return self.v_cruise_kph != V_CRUISE_UNSET
 
-  def update_v_cruise(self, CS, enabled, is_metric):
+  def update_v_cruise(self, CS, enabled, is_metric, reverse_cruise_increase):
     self.v_cruise_kph_last = self.v_cruise_kph
 
     if CS.cruiseState.available:
       if not self.CP.pcmCruise:
         # if stock cruise is completely disabled, then we can use our own set speed logic
-        self._update_v_cruise_non_pcm(CS, enabled, is_metric)
+        self._update_v_cruise_non_pcm(CS, enabled, is_metric, reverse_cruise_increase)
         self.v_cruise_cluster_kph = self.v_cruise_kph
         self.update_button_timers(CS, enabled)
       else:
@@ -68,13 +68,13 @@ class VCruiseHelper:
       self.v_cruise_kph = V_CRUISE_UNSET
       self.v_cruise_cluster_kph = V_CRUISE_UNSET
 
-  def _update_v_cruise_non_pcm(self, CS, enabled, is_metric):
+  def _update_v_cruise_non_pcm(self, CS, enabled, is_metric, reverse_cruise_increase):
     # handle button presses. TODO: this should be in state_control, but a decelCruise press
     # would have the effect of both enabling and changing speed is checked after the state transition
     if not enabled:
       return
 
-    long_press = False
+    long_press = reverse_cruise_increase
     button_type = None
 
     v_cruise_delta = 1. if is_metric else IMPERIAL_INCREMENT
@@ -89,7 +89,7 @@ class VCruiseHelper:
       for k in self.button_timers.keys():
         if self.button_timers[k] and self.button_timers[k] % CRUISE_LONG_PRESS == 0:
           button_type = k
-          long_press = True
+          long_press = not reverse_cruise_increase
           break
 
     if button_type is None: