Merge "renderscript: mention deprecation in the docs "Overview"." am: 117daee1

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2425434



Change-Id: I33de94346171d7ba2a582d83f0d4419aaeb3639f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>