Merge branch 'linux-4.1' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into...

Merge branch 'linux-4.1' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

- gk20a iommu support
- gm107 graphics support without needing proprietary ucode
- various random fixes
- more gm20x bring-up, fifo/ce are ok, gr is mostly complete with the
exception of ctxsw ucode.. nvidia aren't playing nice yet so there's
not much more that can be done at this point...

I spent a lot of time trying to find a viable way of doing gr ctxsw
without signed firmware, but the "security" restrictions on the
fecs/gpccs falcons are excessive and go beyond what'd be necessary to
protect the host from malicious firmware.  This newer nvidia hw is
VERY open-source unfriendly.

I have some experimental host-based ctxsw work that could be a viable
(albeit unsatisfactory and slow) workaround in the meantime, but it
needs some more work and i'd like to get the 3d driver working
properly before i commit to pushing it.

* 'linux-4.1' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (40 commits)
  drm/nouveau/bios: fix fetching from acpi on certain systems
  drm/nouveau/gr/gm206: initial init+ctx code
  drm/nouveau/ce/gm206: enable support via gm204 code
  drm/nouveau/fifo/gm206: enable support via gm204 code
  drm/nouveau/gr/gm204: initial init+ctx code
  drm/nouveau: support for buffer moves via MaxwellDmaCopyA
  drm/nouveau/ce/gm204: initial support
  drm/nouveau: add support for gm20x fifo channels
  drm/nouveau/fifo/gm204: initial support
  drm/nouveau/gr/gk104-: prevent reading non-existent regs in intr handler
  drm/nouveau/gr/gm107: very slightly demagic part of attrib cb setup
  drm/nouveau/gr/gk104-: correct crop/zrop num_active_fbps setting
  drm/nouveau/gr/gf100-: add symbolic names for classes
  drm/nouveau/gr/gm107: support tpc "strand" ctxsw in gpccs ucode
  drm/nouveau/gr/gf100-: support mmio access with gpc offset from gpccs ucode
  drm/nouveau/gr: fix engine name, cosmetic search+replace mistake
  drm/nouveau/pmu/gk20a: add some missing statics
  drm/nouveau/platform: fix probe error path
  drm/nouveau/platform: release IOMMU's mm upon exit
  drm/nouveau/gr/gk104-gk20a: call pmu to disable any power-gating before ctor()
  ...