Merge "simpleperf: support multiple input files in inject cmd." am: f7b67fdfeb am: 3ef7bc611b am: bb1ba523a9

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1915125

Change-Id: Ie56e95df8bc42915a7150fa946d4f86d8f40c77c