mailmap: update the email address for Chris Chiu

Redirect my older email addresses in the git logs.
Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

.mailmap

@@ -65,6 +65,8 @@ Changbin Du <changbin.du@intel.com> <changbin.du@gmail.com>
 Changbin Du <changbin.du@intel.com> <changbin.du@intel.com>
 Chao Yu <chao@kernel.org> <chao2.yu@samsung.com>
 Chao Yu <chao@kernel.org> <yuchao0@huawei.com>
+Chris Chiu <chris.chiu@canonical.com> <chiu@endlessm.com>
+Chris Chiu <chris.chiu@canonical.com> <chiu@endlessos.org>
 Christophe Ricard <christophe.ricard@gmail.com>
 Christoph Hellwig <hch@lst.de>
 Corey Minyard <minyard@acm.org>