[PATCH] Improve pipe split between amdgpu and amdkfd v4

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V4 updates:
 * Rebased onto latest 4.12-wip (ba16d6c), since I got test reports that the
   patch series failed to apply

V3 updates:
 * Fixed kfd set resources grabbing MEC1 queues
 * kfdtest now passes on Kaveri with the amdgpu or radeon driver

V2 updates:
 * Fixed wrong HPD offset in compute_pipe_init for gfx7
 * Fixed compute_pipe_init using wrong ME for gfx7


This is a split of patches that are ready to land from the series:
Add support for high priority scheduling in amdgpu v8

I've included Felix and Alex's feedback from the thread above. This includes:
 * Separate MEC_HPD_SIZE rename into a separate patch (patch 01)
 * Added a patch to fix the kgd_hqd_load bug Felix pointed out (patch 06)
 * Fixes for various off-by-one errors
 * Use gfx_v8_0_deactivate_hqd

Only comment I didn't address was changing the queue allocation policy for
gfx9 (similar to gfx7/8). See inline reply in that thread for more details
on why this was skipped.


Series available in the wip-queue-policy-v4 branch at:
git at github.com:lostgoat/linux.git
Or:
https://github.com/lostgoat/linux.git




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