intelfb: add pll index to the intelfb structure

Add the pll index into the information structure, change get_chipset to
take only the info structure, use plls in correct places
diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c
index 995b47c..7fb9f96 100644
--- a/drivers/video/intelfb/intelfbdrv.c
+++ b/drivers/video/intelfb/intelfbdrv.c
@@ -584,8 +584,7 @@
 	/* Get the chipset info. */
 	dinfo->pci_chipset = pdev->device;
 
-	if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
-				  &dinfo->mobile)) {
+	if (intelfbhw_get_chipset(pdev, dinfo)) {
 		cleanup(dinfo);
 		return -ENODEV;
 	}