Clean up the SB400 chipset enable code

Use pci_dev_find() instead of setting up a filter and iterating over PCI
devices.

Corresponding to flashrom svn r464.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/chipset_enable.c b/chipset_enable.c
index 14db352..99ed3d5 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -741,18 +741,10 @@
 static int enable_flash_sb400(struct pci_dev *dev, const char *name)
 {
 	uint8_t tmp;
-	struct pci_filter f;
 	struct pci_dev *smbusdev;
 
 	/* Look for the SMBus device. */
-	pci_filter_init((struct pci_access *)0, &f);
-	f.vendor = 0x1002;
-	f.device = 0x4372;
-
-	for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
-		if (pci_filter_match(&f, smbusdev))
-			break;
-	}
+	smbusdev = pci_dev_find(0x1002, 0x4372);
 
 	if (!smbusdev) {
 		fprintf(stderr, "ERROR: SMBus device not found. Aborting.\n");