!45 backport adding Intel NTB LTR vendor support for gen4 NTB

Merge Pull Request from: @wuzheng_e61f 
 
This patch is to add Intel NTB LTR vendor support for gen4 NTB.

Intel-kernel issue:
https://gitee.com/openeuler/intel-kernel/issues/I5IZNI

Test:
1.Using CEM to Occulink adapter(NTB hardware cards) for connecting two Sapphire Rapids.
2.set the right NTB port for matching the pcie port of CEM to Occulink adapter in BIOS.
3.Afer Intel NTB hardware is ready, please check the following link to test NTB in Linux.
https://github.com/davejiang/linux/wiki/Intel-NTB-Startup-Guide

Known issue:
N/A

Default config change:
CONFIG_NTB_NETDEV=m
CONFIG_NTB=m
CONFIG_NTB_INTEL=m
CONFIG_NTB_PINGPONG=m
CONFIG_NTB_TOOL=m
CONFIG_NTB_PERF=m
CONFIG_NTB_TRANSPORT=m 
 
Link:https://gitee.com/openeuler/kernel/pulls/45

 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Liu Chao <liuchao173@huawei.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>