Merge branch 'drm-uapi-extern-c-fixes' of https://github.com/evelikov/linux into...

Merge branch 'drm-uapi-extern-c-fixes' of https://github.com/evelikov/linux into drm-next

Not the biggest fan of doing it this way, but what the hell.

* 'drm-uapi-extern-c-fixes' of https://github.com/evelikov/linux: (22 commits)
  drm/vmwgfx: add extern C guard for the UAPI header
  drm/virgl: add extern C guard for the UAPI header
  drm/via: add extern C guard for the UAPI header
  drm/vc4: add extern C guard for the UAPI header
  drm/tegra: add extern C guard for the UAPI header
  drm/sis: add extern C guard for the UAPI header
  drm/savage: add extern C guard for the UAPI header
  drm/radeon: add extern C guard for the UAPI header
  drm/r128: add extern C guard for the UAPI header
  drm/qxl: add extern C guard for the UAPI header
  drm/omap: add extern C guard for the UAPI header
  drm/nouveau: drop drm/ prefix from include
  drm/nouveau: add extern C guard for the UAPI header
  drm/msm: add extern C guard for the UAPI header
  drm/mga: add extern C guard for the UAPI header
  drm/i915: add extern C guard for the UAPI header
  drm/i810: add extern C guard for the UAPI header
  drm/exynos: add extern C guard for the UAPI header
  drm/etnaviv: add extern C guard for the UAPI header
  drm: add extern C guard for the UAPI headers
  ...