intel/drm-shim: update shim to support DG2
We were missing :
- GEM_CREATE_EXT (for local memory allocations)
- MMAP_OFFSET (new version of mmap required on DG2)
- GEOMETRY_SUBSLICE query (also required on DG2)
All of this makes shader-db functional.
Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com