RDMA/hns: Support get XRCD number from firmware

mainline inclusion
from mainline-v6.6-rc1
commit f5a61344
category: feature
bugzilla: https://gitee.com/lujunhuaHW/kernel_1/issues/I828SY
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5a61344ed23e5c5786c399a4c2d0e18af17014a



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Support driver get the num of XRCD from firmware.

Signed-off-by: Luoyouming <luoyouming@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20230721025146.450831-2-huangjunxian6@hisilicon.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Juan Zhou <zhoujuan51@h-partners.com>