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

A few fixes for DC for 4.15.

* 'drm-next-4.15-dc' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu/display: fix integer arithmetic problem
  drm/amdgpu/display: remove unused REG_OFFSET macro
  drm/amdgpu/display: provide ASSERT macros unconditionally
  drm/amd/display: Read resource_straps from registers for DCE12
  drm/amd: Add DCE12 resource strap registers
  drm/amd/display: Explicitly call ->reset for each object
  drm/amd/display: Use single fail label in init_drm_dev
  drm/amd/display: Use plane pointer to avoid line breaks
  drm/amd/display: fix null pointer dereference
  amdgpu/dc: Avoid dereferencing NULL pointer
  drm/amd/display: Don't print error when bo_pin is interrupted
  drm/amd/display: Use constants from atom.h for HDMI caps read
  drm/amd/display: check if modeset is required before adding plane
  drm/amd/display: fix high part address in dm_plane_helper_prepare_fb()
  drm/amd/display : add high part address calculation for underlay
  drm/amd/display: Fix no display on Fiji
  Revert "drm/amd/display: Match actual state during S3 resume."