[automerger skipped] expose readSectionUint() for testing am: c1f8ca3060 -s ours

am skip reason: Merged-In I772c918d162440de6cc492b2faeafe03340fca11 with SHA-1 7ed94efeda is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/bpf/+/15212804

Change-Id: I6812cfa7767b4954ba5e7b35ddd87caf1fe3de72