### Bugs fixed
- Unnecessarily strict validation that disallowed providing a single DRM format modifier without an explicit layout.
The previous code rejected leaving drm_format_modifier_plane_layouts empty if drm_format_modifiers contained exactly one element. However, this should be allowed; filling drm_format_modifier_plane_layouts is always optional.
Changelog:
The previous code rejected leaving
drm_format_modifier_plane_layoutsempty ifdrm_format_modifierscontained exactly one element. However, this should be allowed; fillingdrm_format_modifier_plane_layoutsis always optional.