drm/amdgpu: Add separate array of read and write for BO handles

Drop AMDGPU_USERQ_BO_WRITE as this should not be a global option
of the IOCTL, It should be option per buffer. Hence adding separate
array for read and write BO handles.

v2(Marek):
  - Internal kernel details shouldn't be here. This file should only
    document the observed behavior, not the implementation .

v3:
  - Fix DAL CI clang issue.

v4:
  - Added Alex RB to merge the kernel UAPI changes since he has
    already approved the amdgpu_drm.h changes.

Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Suggested-by: Marek Olšák <marek.olsak@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>