Fix VTS paths on 32-bit target

Decide target_basepaths by device's bitness.
On 32-bit target, do not include */lib64.

Bug: 33930594
Test: vts-tradefed run commandAndExit vts -m VibratorHidlTest -l INFO
Change-Id: I340ded1d763dc194da461ecf183c6a2ff5f5ee6f
5 files changed