pvmfw: Use feasible iommus for device assignment test am: a67e36a94e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2853070

Change-Id: I370820bf70fc8a5d236da9748bd70ee1297811e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>