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With GSP-RM handling the majority of the HW programming, NVKM's usual HALs are more elaborate than necessary, resulting in a fair amount of duplicated boilerplate. Adds 'nvkm_rm_gpu' which serves to provide GPU-specific constants and functions in a more streamlined manner. This is initially used in subsequent commits to store engine class IDs, and replace the per-engine/engobj boilerplate with common code for all GSP-RM supported engines - and is further extended when adding GH100, GB10x and GB20x support. Signed-off-by: Ben Skeggs <bskeggs@nvidia.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Timur Tabi <ttabi@nvidia.com> Tested-by: Timur Tabi <ttabi@nvidia.com> Signed-off-by: Dave Airlie <airlied@redhat.com>