Add MediaProvider SDK prebuilts. am: 1fde83bc2b am: 1d88f4b61b

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/module_sdk/MediaProvider/+/14338716

Change-Id: I405419ca898ad7da875f97aeaae668f77f6f84d3
tree: dc35e134492dd672b3ea350183991bd66d29afd5
  1. current/
  2. Android.bp
  3. OWNERS