soc/amd/picasso/chip.c: Generate ACPI nodes for PCI Bridge A and B
This node is required so we can add child ACPI nodes.
BUG=b:
147042464
TEST=Boot trembyle and confirm Bus A has a firmware node
$ cat /sys/bus/pci/devices/0000\:00\:08.1/firmware_node/path
\_SB_.PCI0.PBRA
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I18144a69ed28a913bc9a2523d69edf84a1402e7e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41546
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>