git: add rebase helper script

This is a script we have been using to rewrite commit messages when
upstreaming coreboot patches from the Chromium OS tree into coreboot
upstream.

Change-Id: I5442279c099dafe55cc97ccf09ee2bc2df4eca5f
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/9299
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed