uboot-sign: add support for different u-boot configurations
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.
Signed-off-by: Andreas Obergschwandtner <andreas.obergschwandtner@skidata.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Richard Leitner <richard.leitner@skidata.com> Signed-off-by: Armin Kuster <akuster808@gmail.com>
