dm: pci: Convert bios_emu to use the driver model PCI API

At present this BIOS emulator uses a bus/device/function number. Change
it to use a device if CONFIG_DM_PCI is enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c
index ed2f61d..d5bf6f4 100644
--- a/drivers/pci/pci_rom.c
+++ b/drivers/pci/pci_rom.c
@@ -328,12 +328,12 @@
 #ifdef CONFIG_BIOSEMU
 		BE_VGAInfo *info;
 
-		ret = biosemu_setup(dm_pci_get_bdf(dev), &info);
+		ret = biosemu_setup(dev, &info);
 		if (ret)
 			goto err;
 		biosemu_set_interrupt_handler(0x15, int15_handler);
-		ret = biosemu_run(dm_pci_get_bdf(dev), (uchar *)ram, 1 << 16,
-				  info, true, vesa_mode, &mode_info);
+		ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
+				  true, vesa_mode, &mode_info);
 		if (ret)
 			goto err;
 #endif