Merge "Add --sdk_target option to update_prebuilts.py" am: 1642d260b4 am: 2677a3876a am: d4736d4aaf

Original change: https://android-review.googlesource.com/c/platform/prebuilts/sdk/+/1873780

Change-Id: Ie95171323a998dbf9a4d9d488d77f74be2975d77