udev: consider a device with BTN_TRIGGER_HAPPY as joystick

These buttons were added specifically for joysticks with lots of buttons, no
other device should be using them. See kernel commit
cf2f765f18960 "HID: handle joysticks with large number of buttons"

We only test for BTN_TRIGGER_HAPPY (an alias for BTN_TRIGGER_HAPPY1) here, a
device that sets buttons 2 and above but doesn't set 1 is considered buggy.

systemd#6137

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

src/udev/udev-builtin-input_id.c

@@ -206,6 +206,7 @@ static bool test_pointers(struct udev_device *dev,
          * rudders/pedals are joystick-like, but buttonless; they have
          * other fancy axes */
         has_joystick_axes_or_buttons = test_bit(BTN_TRIGGER, bitmask_key) ||
+                                       test_bit(BTN_TRIGGER_HAPPY, bitmask_key) ||
                                        test_bit(BTN_A, bitmask_key) ||
                                        test_bit(BTN_1, bitmask_key) ||
                                        test_bit(ABS_RX, bitmask_abs) ||