TODO(fxbug.dev/32938)
#include <zircon/syscalls.h> zx_status_t zx_pci_cfg_pio_rw(zx_handle_t handle, uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset, uint32_t* val, size_t width, uint32_t write);
TODO(fxbug.dev/32938)
handle must have resource kind ZX_RSRC_KIND_ROOT.
TODO(fxbug.dev/32938)
TODO(fxbug.dev/32938)
TODO(fxbug.dev/32938)