MAINTAINERS: Update maintainers of HiSilicon RoCE

mainline inclusion
from mainline-v6.4-rc5
commit 78b6a9a3
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=78b6a9a3f445e121ca08195084206cb8faa6999f

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Wenpeng has moved to other technical areas, and Junxian will
take over his responsibilities in maintaining this module.

Link: https://lore.kernel.org/r/20230506070604.2982542-1-xuhaoyue1@hisilicon.com


Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Juan Zhou <zhoujuan51@h-partners.com>