intel/isl: Explicitly set offset_B = 0 in get_uncomp_surf for arrays
The only user of this case is iris which initializes offset_B to 0 so there's no real bug here. However, it is unexpected from an API PoV. Fixes: 9946120d "intel/isl: Add more cases to isl_surf_get_uncompressed_surf" Acked-by:Ivan Briano <ivan.briano@intel.com> Reviewed-by:
Kenneth Graunke <kenneth@whitecape.org> Part-of: <mesa/mesa!11765>