long_mpc: fix e2e source condition (#26546)

* fix long_mpc source param

* rm print

* add back space for formatting

selfdrive/controls/lib/longitudinal_mpc_lib/long_mpc.py

@@ -352,7 +352,7 @@ class LongitudinalMpc:
       x_and_cruise = np.column_stack([x, cruise_target])
       x = np.min(x_and_cruise, axis=1)
 
-      self.source = 'e2e' if x_and_cruise[0,0] < x_and_cruise[0,1] else 'cruise'
+      self.source = 'e2e' if x_and_cruise[1,0] < x_and_cruise[1,1] else 'cruise'
 
     else:
       raise NotImplementedError(f'Planner mode {self.mode} not recognized in planner update')