Microdroid uses android boot image header V4

It's the latest one supporting the bootconfig. Also this change moves
the kernel commandline paramters from uboot-env.img to boot.img. The
former will eventually be removed.

Bug: 181936566
Test: boot microdroid on VIM3L
Change-Id: I5738f07e8b98fd0d61dbea047ebbd0ceb7258f31
2 files changed
tree: 20d2a7a44ac8fd1670628cb775b569ddc66cddc6
  1. apex/
  2. authfs/
  3. docs/
  4. microdroid/
  5. tests/
  6. virtmanager/
  7. .clang-format
  8. PREUPLOAD.cfg