mailmap: map Geliang's new email address

Just like my other email addresses, map my new one to kernel.org
account too.

Suggested-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Geliang Tang <geliang@kernel.org>

.mailmap

@@ -217,6 +217,7 @@ Geliang Tang <geliang@kernel.org> <geliang.tang@suse.com>
 Geliang Tang <geliang@kernel.org> <geliangtang@xiaomi.com>
 Geliang Tang <geliang@kernel.org> <geliangtang@gmail.com>
 Geliang Tang <geliang@kernel.org> <geliangtang@163.com>
+Geliang Tang <geliang@kernel.org> <tanggeliang@kylinos.cn>
 Georgi Djakov <djakov@kernel.org> <georgi.djakov@linaro.org>
 Gerald Schaefer <gerald.schaefer@linux.ibm.com> <geraldsc@de.ibm.com>
 Gerald Schaefer <gerald.schaefer@linux.ibm.com> <gerald.schaefer@de.ibm.com>