net/hns3: support masking device capability

net/hns3: support masking device capability

This patch supports runtime config of mask device capability, it was
used to mask the capability which queried from firmware.

The device argument key is "dev_caps_mask" which takes hexadecimal
bitmask where each bit represents whether mask corresponding capability.

Its main purpose is to debug and avoid problems.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>