buildroot

opkg-utils: new package

Originally, the opkg sources also contained the tools needed to _create_ an
opkg package. In later releases, this code has been split to a separate
package opkg-utils.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>