Merge "Remove ndk_platform backend. Use the ndk backend." am: 2346a4c6b9 am: 4ef9aa49dc am: 48131c0ace

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1778908

Change-Id: Ic60e42a8dab88914bf593976e66a914d0d0d094d