tree 8057b53a42d1f148c8704173282bbced8a132d82
parent 67b5ec54a5c19452c7aa33c693f281cc18a37d09
author Simon Glass <sjg@chromium.org> 1609212888 -0700
committer Simon Glass <sjg@chromium.org> 1609874795 -0700

dtoc: Use None to mean stdout

At present dtoc uses '-' internally to mean that output should go to
stdout. This is not necessary and None is more convenient. Update it.

Signed-off-by: Simon Glass <sjg@chromium.org>