net-test: properly support SUBARCH on command line am: 9520f1f3a6 am: b2c3edd1e0 am: 7b3d72a46e

Original change: https://android-review.googlesource.com/c/kernel/tests/+/1466688

Change-Id: I03e5a63807764950a2dbc3aec760da09defe9ce8
tree: bc50a605bfeae8e387658ef62b712694f13eb725
  1. devicetree/
  2. net/
  3. Android.bp
  4. METADATA