Merge "Mark GraphicsMapperHidlTest as allowing not being instantiated" am: ca31517201 am: 527ce01e45 am: 5342c34a26 am: 51cfab68d4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1439141

Change-Id: I8be3947c556b67f5db0f1fa7d7e9a2512c83b2c7