tree 3b18a158374504b0ef07441311621e4a7c4abc57
parent 4a165202093d69fcfd8a5ab3ea5b5e785096d41a
author Alex Van Damme <atv@google.com> 1589322613 -0700
committer Alex Van Damme <atv@google.com> 1589322777 -0700

Symlink all flash files into temp dir

- Depending on where the image to flash is sourced from, we may not be
able to create the symlinks for things like bl2.
- To solve this, symlink all files from the files_dir into a temporary
directory, and perform all other operations in that directory.
- Clean up the temp dir with an EXIT trap.

Change-Id: I44dd870719d84219c69d9983ff9281fd6b2a4f7a