build-image: Create meta.yml early

Closes #31

See merge request Librem5/image-builder!80

This makes sure it belongs to the user running the build process.  If we
create it during root.sh it will belong to root and not be writeable
later on when we want to indicate a tainted image.

Closes: #31

network: Remove eth0 from interfaces list

See merge request Librem5/image-builder!79

The eth0 interface is automatically picked up by NetworkManager for DHCP.

Switch NXP evk kernel build to 4.21 (linux-next)

See merge request Librem5/image-builder!74

Jenkinsfile.uboot : use the correct path for the artifacts

See merge request Librem5/image-builder!76

build_uboot.sh : add devkit u-boot with M4 code interaction

See merge request Librem5/image-builder!71

Devkit uboot script

See merge request Librem5/image-builder!68

We add some minor build fixes on top.

No need to set it empty 4 times.

We only support a single armhf configuration but 3 arm64 ones.

We grab that from our kernel tree.

Add checksum and size of the uncompressed image to the metadata

See merge request Librem5/image-builder!73

This also changes the name of the dtb for the devkit-recovery
target.

This will allow us to verify that the downloaded image uncompressed
correctly and to have a proper progress bare even with images of
different sizes.

QEMU build missing from README.md

See merge request Librem5/image-builder!72

Fix kernel setup on devkit

Closes #23

See merge request Librem5/image-builder!62

build_kernel_deb: Use bindeb-pkg

See merge request Librem5/image-builder!69

The default script compiled into u-boot was used so far. The change fixes how the symlink was done.

Ideally, the script should use the partition where it was found, making the script a little more robust against repartitioning.

devkit: Use a properly named job building from master

See merge request Librem5/image-builder!70

Insted of grabbing the kernel from a job that builds from another
branch use the build job introduced with

    5e896d73

We handle this via librem5-devkit-base to make the installer more slime
and have less cruft in the image builder.

This way we already create an initramfs which can later on be used by
flash-kernel.

Closes: #23

We're using an uncompressed kernel on arm64.

We're not using the source package atm and since we can reference the
kernel by git hash it's simple to find the exact commit that was used to
build it so skip building the source package to make things faster.

root.sh: Provide additional diagnostics when package installation failed

See merge request Librem5/image-builder!66

buster: Drop contrib and non-free

See merge request Librem5/image-builder!67

We only needed it for some firmware on the nitrogen board which
we don't install anymore.

Print information from apt's dependency resolver. This helped to debug
the libsensors4 -> libsensors5 transition breaking our self built mesa
and thus preventing the image build to succeed.

Devkit kernel build

See merge request Librem5/image-builder!59