crtc-kms: Include MetaCrtc in MetaCrtcKms struct
Otherwise it can't be a GObject inheriting MetaCrtc. This fixes warning logged as
"invalid uninstantiatable type '(null)' in cast to 'MetaCrtcKms'"
Fixes: 1ce9e379
Otherwise it can't be a GObject inheriting MetaCrtc. This fixes warning logged as
"invalid uninstantiatable type '(null)' in cast to 'MetaCrtcKms'"
Fixes: 1ce9e379