openEuler/MAINTAINERS: Update maintainers of HiSilicon RoCE

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8TS3Y



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Add Youming Luo, Junxian Huang as openEuler Hisilicon RoCE maintainer.

Signed-off-by: Juan Zhou <zhoujuan51@h-partners.com>