Merge "ueventd: Allow pattern matching to find external firmware handler" am: 4a3ab034c6 am: dd7da900a0 am: 1875508cdf am: 5b7d0be4c3

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1664121

Change-Id: Id334cdf328634d2c47f9f6509b5f1b2765d83a6e