Merge "Explain how to add service_contexts for stable-c mapper" into main am:...

Merge "Explain how to add service_contexts for stable-c mapper" into main am: 1b201110 am: a05f4028

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3062802



Change-Id: I3f691230c75c723c2e4e343b0d86736245e46e77
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>