Move the common APIs to pci_ops.c and IO based operations to
pci_io_ops.c, and add pci_map_bus_ops.c to support bus mapping.
TEST=Build pass and boot up to kernel successfully via SSD on Dojo
board, here is the SSD information in boot log:
== NVME IDENTIFY CONTROLLER DATA ==
PCI VID : 0x15b7
PCI SSVID : 0x15b7
SN : 21517J440114
MN : WDC PC SN530 SDBPTPZ-256G-1006
RAB : 0x4
AERL : 0x7
SQES : 0x66
CQES : 0x44
NN : 0x1
Identified NVMe model WDC PC SN530 SDBPTPZ-256G-1006
BUG=b:178565024
BRANCH=cherry
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Change-Id: Ie74801bd4f3de51cbb574e86cd9bb09931152554
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56789
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2ad74deb2a