Support mixing super images in the assembler.

This depends on having the otatools from the "default build" and on the
target files zip from both builds. It uses build_super_image to rebuild
the super image out of the contents of the target files zip, following
the guide from ycchen@.

Test: Manually download target images zip and pass to assembler
Bug: 141721921
Change-Id: Ie4f016f03a052e444bf53142c542f36933a366ed
4 files changed
tree: 1297eac782ba689e92d97b3992e2f0566d5c6131
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS
  9. TEST_MAPPING