Merge "bta_gattc_api: Improve queueing messages" am: 3e6c5b1d am: eba6d38e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2239560



Change-Id: I5cf3b43384997155cbd26f9b2ac3f27940412237
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>