Avoid holding locks during hotplug callback am: fbc40eaca8

Original change: https://android-review.googlesource.com/c/device/generic/goldfish-opengl/+/2439472

Change-Id: I6458895e569baeb8aedef2d264f1f856bea423ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>