intel/isl: Implement correct tile size calculations for Ys/Yf

intel/isl: Implement correct tile size calculations for Ys/Yf

The tile size calculations use a clever bit of math to make them short
and simple.  We add unit tests to assert that they identically match the
tables in the PRM.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23620>