drm/amd/include: Add get_hive_id interface in kfd2kgd

KFD need to get hive id from amdgpu to build up the XGMI topology

Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>