iris/resource: Use isl surface alignment during bo allocation

Reworks:
 * Change subject from "iris: Align main surface allocation to 64k on gen12+"
 * Make use of isl surf alignment. (Nanley)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
1 file changed