Merge branch 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

ttm and license fixes
* 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux:
  drm/ttm: swap consecutive allocated pooled pages v4
  drm/ttm: swap consecutive allocated cached pages v3
  drm/ttm: roundup the shrink request to prevent skip huge pool
  drm/ttm: add page order support in ttm_pages_put
  drm/ttm: add set_pages_wb for handling page order more than zero
  drm/ttm: add page order in page pool
  drm/ttm: use NUM_PAGES_TO_ALLOC always
  drm/amdgpu: add license to files where it was missing
  drm/amdgpu: add license to Makefiles