Add library list for VNDK using core variant

Some device requires VNDK_USING_CORE_VARIANT list, but it was not
implemented in previous. Adding this library list to the build target so
it can be added to system image.

Bug: 141695559
Test: m -j passed & Tested from Cuttlefish
Change-Id: I52750583050401098ca8dacee9cf84e8c5727e36