roh/hns3: Add ROH cmdq interface support

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5WKYW



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Each ROH device has its own cmdq interface, which includes
send queue CSQ and receive queue CRQ. These commands are
used to obtain the resources of the ROH device from IMP and
implement related configurations.

This patch adds the support of IMP command interface to the
ROH driver, include:
1. initialize the roh command queue resource
2. manage the roh command queue descriptors
3. provide the cmdq send operation APIs

Signed-off-by: Ke Chen <chenke54@huawei.com>
Reviewed-by: Gang Zhang <gang.zhang@huawei.com>
Reviewed-by: Yefeng Yan <yanyefeng@huawei.com>
Reviewed-by: Jingchao Dai <daijingchao1@huawei.com>
Reviewed-by: Jian Shen <shenjian15@huawei.com>