Merge "libavf: add AVirtualMachineRawConfig_setVCpuCount" into main am: cdd4317513

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3407529

Change-Id: I1f660f6f1069f07df47793b4b425a83a4d8a8309
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>