Merge "libmpeg2extractor: Add host support" am: 32fdde7c37 am: 80513db00a am: a0706cae8a am: 958e007981

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1355671

Change-Id: Ic5bfd7181f8147d368375bc06f94f34f6c23cfa6