RDMA/hns: Support congestion control algorithm configuration at QP granularity

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6N1G4



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This patch supports to configure congestion control algorithm
based on QP granulariy. The configuration will be sent to
driver from user space. And then driver configures the selected
algorithm into QPC.

The current XRC type QP cannot deliver the configured
algorithm to kernel space, so the driver will set the default
algorithm for XRC type QP. And the default algorithm type is
controlled by the firmware.

Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Reviewed-by: Yangyang Li <liyangyang20@huawei.com>