Change in coreboot[master]: libpayload: Export PCIe config info from coreboot to libpayload

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Ravi Kumar Bokka, mturney mturney, Arthur Heymans, Furquan Shaikh, Kyösti Mälkki, Prasad Malisetty.
Yu-Ping Wu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57614 )

Change subject: libpayload: Export PCIe config info from coreboot to libpayload
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Patch Set 41:

(3 comments)

File payloads/libpayload/include/sysinfo.h:

https://review.coreboot.org/c/coreboot/+/57614/comment/8a94785e_ffed7e48 
PS40, Line 148: 	uintptr_t pci_config_info;
Move this right below mem_chip_base?

File src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h:

https://review.coreboot.org/c/coreboot/+/57614/comment/f40afaf9_081ead7a 
PS40, Line 83: PCIE
PCI_INFO

File src/lib/coreboot_table.c:

https://review.coreboot.org/c/coreboot/+/57614/comment/5c29dec6_40196059 
PS40, Line 100: cbmem_add
This should be done somewhere else in the pcie code, as the cbmem entry itself is unrelated to the coreboot table. Though I'm not sure whether we should move this to common code, or let each platform add the cbmem entry.