Convert build/make/tools/fs_config/Android.mk to Android.bp

And export soong config variables of paths of *_dlkm partitions and whether they are built for a product.

Bug: 377304441
Test: lunch aosp_cf_x86_64_phone-trunk_staging-eng && m, check fs_config_dirs
and fs_config_files exist in etc/ in each partitions

Change-Id: I45decac561d5aadfb9e59dfc4157fd3699e65c9b