Allow uninstantiated HIDL tests

Be prepared for no HIDL on devices.
This was already declared in DeviceManifestTest.cpp but needed to be
declared here in SingleManifestTest.cpp for
vts_treble_vintf_framework_test.

Test: atest vts_treble_vintf_framework_test
Bug: 218588089
Change-Id: I64ccfee1429efe7a303a8ac37bbad128c553a253
1 file changed