HID/usbled: add support for Dream Cheeky DL100B Mailbox Friends Alert

Adding support for Dream Cheeky DL1800B Friend Alert device.

Signed-off-by: Dan Delaney <drdelaney@loclhst.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>