Merge tag 'zxdrm-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into drm-next

ZTE DRM driver updates for 4.11:
 - Add missing selection of VIDEOMODE_HELPERS in Kconfig, since ZTE DRM
   driver uses drm_display_mode_to_videomode().
 - Enable HDMI audio support through SPDIF interface based on generic
   hdmi-audio-codec driver.
 - Enable VOU VL (Video Layer) to support overlay plane with scaling
   function.
 - Refine zx_vou driver a bit and then add TV Encoder output device
   support.

[airlied: fixup plane format change]

* tag 'zxdrm-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  drm: zte: add tvenc driver support
  dt: add bindings for ZTE tvenc device
  drm: zte: add function to configure vou_ctrl dividers
  drm: zte: move struct vou_inf into zx_vou driver
  drm: zte: add interlace mode support
  drm: zte: add overlay plane support
  drm: zte: add .atomic_disable hook to disable graphic layer
  drm: zte: make zx_plane accessible from zx_vou driver
  drm: zte: support hdmi audio through spdif
  drm: zte: select VIDEOMODE_HELPERS in Kconfig