Check existence of HIDL shim library

A VTS test module of specific bitness is skipped if the
corresponding HIDL shim library does not exist on device.
VtsTrebleHidlShim test ensures that for all HALs listed in
vendor/manifest.xml, at least one HIDL shim (32 or 64 bit) exists
on device.

Bug: 38356130
Test: make vts -j && vts-tradefed run commandAndExit vts -m
VtsTrebleHidlShimTest

Change-Id: Ia2a3a2fb365f05cb4923d4b55cddd59d7b61e3b9
4 files changed