Fix test configs for libvintf_test and vintf_object_test

The two tests need to use different test configs and they should be
limited to Android target, so the host config can be auto generated.

Bug: 121322618
Test: m -j libvintf_test vintf_object_test
atest libvintf_test
atest libvintf_test --host
atest vintf_object_test
atest vintf_object_test --host

Change-Id: Iae8068f4aac015f65e9d3bf43ff80eaa07731949
4 files changed