Integrate meta-seconorth-distro/wlvncc

Commit: seco-ne/yocto/layers/meta-seconorth-distro@4354d3dc

wlvncc: wayland vnc client

The package depends on gbm which is not supported for seco-mx6-fsl machine. See commit 4420f4fa ("qtbase: Remove gbm packageconfig_distro option for seco-mx6-fsl machine").

Also the package depends on libavcodec provided by ffmpeg. It requires to accept the commercial license. The following line should be added to local.conf: LICENSE_FLAGS_ACCEPTED = "commercial_ffmpeg"