WIP: kms/impl-device/atomic: Add vc4 to deny list
vc4 is used in Raspberry Pi 4 devices and has been found to freeze and crash inside kernel atomic KMS functions with Linux 5.13. Disable it for now.
vc4 is used in Raspberry Pi 4 devices and has been found to freeze and crash inside kernel atomic KMS functions with Linux 5.13. Disable it for now.