The command queue is the configuration queue. The software
configures hardware by filling the commands into command
queues. It includes command send queue and receive queue.

In hip08 RoCE engine, It supports to configure and query
registers by command queue.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NShaobo Xu <xushaobo2@huawei.com>
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>