xhci-plat-hcd needed for USB boot on Raspberry Pi 4B
dwc2 needed for USB boot on Raspberry Pi 3B, 3B+

This needed for qemu (virtio-gpu) on aarch64.

It is needed by ntfs

slick-greeter is well integrated with cinnamon.

See-also: https://bugzilla.altlinux.org/38092

See-also: https://bugzilla.altlinux.org/38092

This is to ensure a wider support network interfaces.

sddm is too fastidious to the video driver, and lxqt is for weak hardware.

See-also: https://bugzilla.altlinux.org/37598
          https://bugzilla.altlinux.org/37636

This list kernel modules for loading on single board computers.

Add more usb kernel modules

Suggested by rider@

If we already have systemd-{enabled,disabled} lists, then
don't overwrite them, just add lists to them.
Services presented in the lists should be filtered out
from services-{on,off} lists already.
This fixes commit 2b501116
"services: Don't touch services already listed in the config".

Suggested by cas@.

Use systemd-settings-enable-log-to-tty12 (included by +systemd-optimal)
instead.

Module efivars will be loaded by udev now.

+systemd-optimal do not call +systemd more.
Also added +systemd-optimal into jeos-systemd, regular-server. Need
to disable core dump

See-also: https://www.altlinux.org/Realtime

rootfs is not required to be installed on lvm2.

Kernel module snd-seq-midi is not compiled for mcom02.

Suggested by Speccyfighter: https://forum.altlinux.org/index.php?topic=36177.msg346516#msg346516

This is necessary to prevent accidental hit of another branding.
Usually the problem is solved by setting up pkgpriorities  in apt settings.
But this is inconvenient when you need to make building often with others
branding.

Users expect that if virtualization is selected during installation
of the distribution, the libvirtd service will be enabled.

VM_INITRDFEATURES qemu not allowed for e2k only. This feature
added modules optionaly.
VM_INITRDFEATURES usb allowed for all arches, but the presence of all
modules is required. Therefore, for all arches all usb modules are
optionally added.

The entry in /etc/fstab about the mount parameters of the root
partition needs to be done not only for builds with u-boot.
But, if the record already exists, then it will not be added.
The file system type is set by the variable VM_FSTYPE.

Since packet sorting is enabled by default, then
the order in KFLAVORS has ceased to matter.
Kernels are always installed in alphabetical order.
Therefore, it makes no sense to sort by buildtime.
See-also: https://bugzilla.altlinux.org/show_bug.cgi?id=30806

Also fixed my typo. When creating a symlink, the variable
$kver was used, i.e. the entire list of kernels, not the
last value $KVER of the list.