vndk-def: Fix vndk-ext computation.

This commit fixes vndk-fwk-ext qand vndk-vnd-ext computation.  We should
hash imported_lib, an instance of ELFLinkData, instead of ELF object.

Test: ./tests/test_vndk.py
Change-Id: Idc5123bbf9980b76527b5fa295a1fe01c8f7f44c
46 files changed