Checkpatch: Use a Stable Version of Dependency

There is a known issue in the latest version of checkpatch dependency.
This issue would cause failure in checkpatch job.
A stable version of dependency would be used
until the issue is fixed in dependency repo.

This patch would be reverted when the issue in dependency repo is fixed.

Change-Id: I453090f628c14a15cb3aa003be3dd86664e69a09
Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
1 file changed