MAINTAINERS: Update maintainers for HISILICON ROCE DRIVER

Add myself as a maintainer for HNS RoCE drivers, and update Xavier's
e-amil address.

Link: https://lore.kernel.org/r/1583575114-32194-1-git-send-email-liweihang@huawei.comSigned-off-by: Weihang Li <liweihang@huawei.com>
Acked-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

MAINTAINERS

@@ -7575,7 +7575,8 @@ F:	Documentation/admin-guide/perf/hisi-pmu.rst
 
 HISILICON ROCE DRIVER
 M:	Lijun Ou <oulijun@huawei.com>
-M:	Wei Hu(Xavier) <xavier.huwei@huawei.com>
+M:	Wei Hu(Xavier) <huwei87@hisilicon.com>
+M:	Weihang Li <liweihang@huawei.com>
 L:	linux-rdma@vger.kernel.org
 S:	Maintained
 F:	drivers/infiniband/hw/hns/