wl-drm: don't store wlr_renderer
Query the formats at init time, then forget about the renderer. This will allow wl_drm to be created with a list of formats instead of a renderer, and will behave better after a GPU reset.
Query the formats at init time, then forget about the renderer. This will allow wl_drm to be created with a list of formats instead of a renderer, and will behave better after a GPU reset.