NNAPI SL Benchmark - Add option to specify vendor [4/n]. am: 6192b242a1 am: c997585c0f am: ae4833cf18 am: 093bd46fe3

Original change: https://android-review.googlesource.com/c/platform/test/mlts/benchmark/+/2096397

Change-Id: I2fab1773c3d09ed5c99cf7da91238fdfe050686d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>