libbinder_ndk: Provide a fake llndk-versioning.h header

Remove an unnecessary check for __TRUSTY__ by providing
a fake llndk-versioning.h header instead.

Bug: 242243245
Test: m libbinder_ndk_on_trusty_mock
Change-Id: I10adf0059deb4781c6e1e5ac05ccdc5a83a61cce
3 files changed