Silicon/Bosc: Add Support pcie driver to NanHuDev

[wangy566]

In order to support PCIe host driver on the Silicon/BOSC NanhuDev platform。
Three patches have been submitted, with the following functions:

7dcf45f: Add PCI Segment Library for Silicon/Bosc NanHuDev platform.
8f8ae61：Add PciHostBridgeLib driver for Silicon/Bosc NanHuDev platform.
6764dc4: Add Support NVME device

Reviewed-by: Evan Chai <evan.chai@linux.alibaba.com>
Reviewed-by: Ran Wang <wangran@bosc.ac.cn>
Reviewed-by: Jian Zhang <zhangjian@bosc.ac.cn>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Daniel Schaefer <git@danielschaefer.me>
Cc: Ray Ni <ray.ni@intel.com>

[leiflindholm]

Please put enough information in the PR title that we can deduce what platforms are impacted from that alone. Then please add some actual description, so that once someone opens the PR, they don't then need to go looking at each individual commit to understand what is being done.

[wangy566]

Please put enough information in the PR title that we can deduce what platforms are impacted from that alone. Then please add some actual description, so that once someone opens the PR, they don't then need to go looking at each individual commit to understand what is being done.

Thank you very much for the reminder. The title has been updated and a description of the patch's functionality has been added.