Move LLNDK moved_to_apex into the Android.bp files

Remove the last use of DirectlyInAnyApex from the cc package by
explicitly marking the 3 LLNDK libraries that were moved into apexes
by adding an llndk.moved_to_apex property.

Bug: 372543712
Test: no change to make_vars-${TARGET_PRODUCT}.mk
Change-Id: Ia08f3579518406014603bec6afac4cdf7a6f31aa