Import the udhcpsnoop package from the TIP feed. The original Makefile in TIP repo spcifies GPL-2.0 as the PKG_LICENSE. However this is a mistake, as the SPDX headers of the repos source files all specify BSD-3-Clause as their license. See https://github.com/Telecominfraproject/wlan-ap/blob/uCentral-trunk/feeds/ucentral/udhcpsnoop/Makefile Signed-off-by: David Bauer <mail@david-bauer.net>