Map REL_DIAL to vertical scrolling

This makes the absolute axis codepath behave the same as the relative axis
path.

Signed-off-by: Peter De Wachter <pdewacht@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 54a3120e33)

src/evdev.c

@@ -1541,7 +1541,7 @@ EvdevAddAbsValuatorClass(DeviceIntPtr device, int want_scroll_axes)
                                        NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                                        0, 0, 0, Relative);
             SetScrollValuator(device, pEvdev->rel_axis_map[idx],
-                              SCROLL_TYPE_HORIZONTAL, 1.0,
+                              SCROLL_TYPE_VERTICAL, -1.0,
                               SCROLL_FLAG_NONE);
         }
     }