intel/isl: Assert that we don't use CCS for storage images

intel/isl: Assert that we don't use CCS for storage images

I enabled CCS for storage images in the Vulkan driver and ran it through
the CTS.  It didn't result in any hangs but it demonstrated that the data
port cannot handle CCS.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>