[automerger skipped] DO NOT MERGE Increase notification channel limit. am: de7c43eb -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22931416



Change-Id: I0abb4b303c00a83724feb57b27050b7980486ece
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>