uboot-phytec

patman: Use reverse order for changelog

Specially when many revisions are need for a patchset, the most
interesting information is about the last set of changes so we output
the changelog in reverse order to easy identification of most recent
change set.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Simon Glass <sjg@chromium.org>