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: Ic6847fd1966d4e1884cdce97015c8c1d1e0f3422