[U-Boot] board_pci_pre_scan() and board_pci_post_scan()

[Bin Meng]

Hi Simon,

With driver model pci conversion on x86 boards, we now missed the call
to board_pci_pre_scan() and board_pci_post_scan() which are called in
the non-dm path. For example, board_pci_post_scan() in
arch/x86/lib/fsp/fsp_common.c is not called to do any work as
requested by FSP after pci enumeration.

I am not sure where we could insert these call back in the dm. Do you
have any possible solution on this?

Regards,
Bin