- Move xxd-native dependency from hosttools in layer to recipe
- Set license flag to newer value

Feature/release docs

See merge request !30

CI for Releases

See merge request !29

This is more useful as it allows to adjust the targets as required
by the CI pipeline.

Add further tools in image-ked-test, make i.MX8MM display drivers built-in, generalize boot script

See merge request !28

With the upstream display driver stack the DRI paths are different.
Fix them.

Use generic names for the boot scripts for booting from a single
partition and for doing A/B boots from two separate partitions.

Use the generic 'load' command instead of specific filesystem
commands.

Also sync the environment for i.MX6UL/ULL with the one for i.MX8MM.

This way we can boot i.MX8M devices with a boot logo and splash
screen as the display pipeline is available before the userspace and
filesystem are ready.

meta-ked-imx: Update kernel and U-Boot refs

See merge request !27

Replace occurences of 'ktn'/'KTN' with 'ked'/'KED'

See merge request !26

In the future we will reference the BSP as meta-ked-bsp. Adjust names
of layers, files, etc. accordingly. Only some OE metadata like image,
distro or machine override names are keeping the 'ktn' for now.

KED stands for Kontron Electronics Deutschland GmbH where the BSP
is maintained. Nowadays it support only products of the KED branch
and products of the Kontron Europe GmbH or other branches are not
supported.

Fix kas container image

See merge request sw/ked/meta-kontron!24

This reverts commit 9ead0a89.