Merge "EntropyMixer: ensure new seed file is as good as old one" am:...

Merge "EntropyMixer: ensure new seed file is as good as old one" am: bcbd6fe8 am: f11ba55d am: e0bb053e am: 2cee2d3b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2050961



Change-Id: Ia3729f740b8626bb7898615858f5787ec245cb9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>