drm-misc-next for v4.18: UAPI Changes: - Aspect ratio support for 64:27 and 256:135, usable by atomic clients and legacy clients that set DRM_CLIENT_CAP_ASPECT_RATIO. Core Changes: - Aspect ratio validation has become more strict. - A few DP fixes. - Unneeded stubs from sync_debug interface removed. Driver Changes: - Small fixes to xen-front.