mailmap: Update email address for Cai Huoqing

The caihuoqing@baidu.com would be deprecated and use cai.huoqing@linux.dev
as the main email address.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20211206025034.2729-1-caihuoqing@baidu.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>