This is done by concatenating the DTB with the kernels public key
to all built u-boot binaries. Furthermore the installation of all
the binaries is required.
(From OE-Core rev: bacb59079eb6ba7e43507a6d3a357341fb367f83)
Signed-off-by: Andreas Obergschwandtner <andreas.obergschwandtner@skidata.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>