Add getInterfaceHash() method

Bug: 136065010
Test: runtests.sh, atest CtsNdkBinderTestCases
Change-Id: Iea1e16e9ffb85cd983747011c42fc1ac9081f157
Merged-In: Iea1e16e9ffb85cd983747011c42fc1ac9081f157
14 files changed