Add product_services support to ld.config.vndk_lite

We're moving apps and their libs to product_services for older
devices too, so mimic the rules in the default ld.config related
to product_services.

Also fix a one-off disparity between /product and /product_services
in ld.config.txt.

Bug: 114804489
Test: m out/target/product/marlin/system/etc/ld.config.vndk_lite
Change-Id: I166275c035c85b4d69cff8e9d51af3d6d0ff4857