anv: fix format mapping for depth/stencil formats

anv_format is supposed to have a pointer back to the associated VkFormat, we were missed this for depth/stencil formats.

This doesn't fix anything afaict, but will be needed for future changes.

Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com Fixes: 465de47b ("anv: associate vulkan formats with aspects")