Add the 'mkimage' host tool to the toolchains generated with 'bitbake
meta-toolchain' or with 'bitbake -c populate_sdk <image>'.
This allows to use the standalone toolchain to build kernel images of
type uImage (with u-boot header)
https://jira.digi.com/browse/DEL-1003
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Javier Viguera