anv: fix incorrect VMA alignment for CCS main surfaces

Maybe finer way of dealing with this requirement would be to increase
the number of pdevice->memory.types[] to add a category for special
alignment cases.

Meanwhile this fixes the problem of CCS surface alignment and it's
probably not going to cause issues given the size of our address
space.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 6af8a4ac ("anv: Add aux-map translation for gen12+")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
(cherry picked from commit 5fdea9f4)