anv/image: Use align_u64 for image offsets

anv/image: Use align_u64 for image offsets

The ALIGN functions in util/u_math.h work on uintptr_t whose size
changes depending on your platform.  Use ones which take an explicit
64-bit type instead to avoid 32-bit platform issues.

Cc: mesa-stable@lists.freedesktop.org
Reported-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4414>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4414>