driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I63KVU

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If a uQP works as DCA mode, the userspace driver need config the WQE buffer
by calling the 'HNS_IB_METHOD_DCA_MEM_ATTACH' method before filling the
WQE. This method will allocate a group of pages from DCA memory pool and
write the configuration of addressing to QPC.
Signed-off-by: NChengchang Tang <tangchengchang@huawei.com>
Reviewed-by: NYangyang Li <liyangyang20@huawei.com>
Reviewed-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>