[automerger skipped] hwc2: add locks for callback functions am: 9bac9d39bb -s ours am: 2dae04e9a8 -s ours am: d213a17cc1 -s ours

am skip reason: Change-Id I3b29c2e17f3a8968348d0d0a29feaca287d4c72c with SHA-1 ccf7cd3bf2 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/qcom/display/+/11902570

Change-Id: Ibf0183e17af23a9fc1e0ab71555fa8fabfd06325