This reverts commit 1d5b7b19.

  - sysvinit-etcnet: System V init with etcnet
  - systemd-etcnet: systemd with etcnet
  - systemd-networkd: systemd with networkd

Run installer features during install via rootfs.

This is needed to resolve a bad choice package for Dependency
on network-config-subsystem.

these targets support all Raspberry Pi.

In the future, you need to decide for which architectures use/x11/nouveau,
use/x11/radeon, use/x11/amdgpu are available. Then this condition will not be needed.

- Revert commit for support multiple kernel in iso image.

This reverts commit 02a5231b.
Upstream mkimage has not yet take patches to support packaging
multiple kernels to ISO image. In order to avoid problems, have
to revert this commit.

- New official maintainer antohami@ (blessed by mike@)
- Added grub config file generator for iso images
  (thanks shaba@)
- Expanded support for USB controllers and SD card readers
- Added support for booting on single-board Raspberry Pi 3 and 4
  in EFI mode (u-boot or edk2)
- Added grub-efi bootloader support for rootfs images
- Merged with branches for Workstation, Education,
  Simply Linux, Server, Server-V distributions
- Added a starterkit build profile with a real-time kernel (live)
- Added riscv64 platform support (thanks arei@)
- rootfs: support headless boot via alterator-setup-vnc (thanks arei@)

This is need to working bluetooth with GUI

If there is no Ethernet connection, RPi4 loading stops for 2 minutes.

On Raspberry Pi 3 B Plus with kernel 5.6.16-rpi-un-alt1 occurs
framebuffer error with dtoverlay=vc4-kms-v3d (antohami@)