Merge tag 'drm-intel-fixes-2018-08-29' of git://anongit.freedesktop.org/drm/drm-intel...

- fix for GLK and CNL watermark workaround
- fix for display affecting NUCs with LSPCON
- freeing an allocated write_buf on hdcp
- audio hook when display is disabled
- vma stop holding ppgtt reference

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180829234512.GA32468@intel.com