Refuse to run if framebuffer or dri devices are present
The simpledrm driver, introduced in kernel 5.14, can replace efifb to provide the efi framebuffer. This fixes a bug on Fedora 36 (first version to use simpledrm driver): https://bugzilla.redhat.com/show_bug.cgi?id=2074789 v2: check for framebuffer or dri devices instead of efi framebuffer interface. Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>