Merge "Add --sdk_target option to update_prebuilts.py" am: 1642d260b4 am: 2677a3876a am: d4736d4aaf am: 45010e7f1c am: bae335658e

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

Change-Id: I51c265016879d2c0ab4ac1c8e02d7871d1f41224