Make sure binderRpcTest isn't mixing static version of libbinder and libbinder_ndk

libbinder_ndk is a shared_lib that will be using the libbinder.so types
from the device. Those types do not match the static types loaded in
these tests.

Flag: TEST_ONLY
Test: atest binderRpcTest
Bug: 427923758

Change-Id: I406f7c9632228c0e745e1233d6a050455c29e0eb