anv/blorp: Handle ISL_AUX_USAGE_HIZ

Prevent assert failures that would occur in the next patch.

v2: Don't remove asserts from blorp/blit (Jason Ekstrand)

Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
1 file changed