MAINTAINERS: Add Chengchang Tang as Hisilicon RoCE maintainer

mainline inclusion
from mainline-v6.7-rc5
commit b6f09b16558f31d93cdcda3cab90a2d309a7c823
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8TS3Y
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b6f09b16558f31d93cdcda3cab90a2d309a7c823



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Add Chengchang Tang as Hisilicon RoCE maintainer.

Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20231117080657.1844316-1-huangjunxian6@hisilicon.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Juan Zhou <zhoujuan51@h-partners.com>