android: add support for classic dri drivers

When using -Ddri-drivers option to build classic drivers the current 'ls -1' based command causes the unwanted creation of symlinks for dri-drivers

$(foreach ) cycle allows to create symlinks only for gallium drivers as originally intended

At this point classic dri drivers build for android can be added and be evaluated for mesa stable branches too, where i965 has still some users

mesa stable tags will be added after review by stakeholders

Fixes: 8621bd8d ("android: Add scripts to build using meson")