This enables the power and equals keys on the Macally ikey keyboard.

Based on the Cougar gaming keyboard HID driver, which uses the same
vendor ID.
Signed-off-by: NAlex Henrie <alexhenrie24@gmail.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>