pre-upload.py: check that Change-Id is in the last line

If the Change-Id is not on the last line a new review gets created
on upload.

BUG=none
TEST=Tested by adding stuff below Change-Id in this cl.

Change-Id: Iea595752f267df29248f59fc69d417c63519181a
1 file changed
tree: 59f7269556ebb4b039f4ef7f83ad34f69d0e379b
  1. checkpatch.pl
  2. pre-upload.py