tree e7c2c2f2773e51a212b7139a62b0bb727862e65f
parent c94a705f445aa7edc2a30b364b59fe8becb02f11
author Tao Bao <tbao@google.com> 1435366179 -0700
committer Tao Bao <tbao@google.com> 1435422091 -0700

sparse_img.py: Don't write empty map groups.

In certain cases, we may have no mapping of ZERO or NONZERO blocks in
the image (such as squashfs at the moment). Don't write those groups if
they are empty.

Change-Id: I82aa05fbbd79130b08868585edd5298e531c4f5a