intel/sandybridge: Clean VGA BIOS ids up a little

Sync map_oprom_vendev() and autoport with the list of PCI ids in the
`gma.c` driver, remove one obsolete Kconfig default override.

Change-Id: I12f24f415b695c516fbb947114e09c873af2e439
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/20814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/northbridge/intel/sandybridge/gma.c b/src/northbridge/intel/sandybridge/gma.c
index 6d1044c..db24dda 100644
--- a/src/northbridge/intel/sandybridge/gma.c
+++ b/src/northbridge/intel/sandybridge/gma.c
@@ -258,18 +258,20 @@
 
 u32 map_oprom_vendev(u32 vendev)
 {
-	u32 new_vendev=vendev;
+	u32 new_vendev = vendev;
 
 	switch (vendev) {
-	case 0x80860102:		/* GT1 Desktop */
-	case 0x8086010a:		/* GT1 Server */
-	case 0x80860112:		/* GT2 Desktop */
-	case 0x80860116:		/* GT2 Mobile */
-	case 0x80860122:		/* GT2 Desktop >=1.3GHz */
-	case 0x80860126:		/* GT2 Mobile >=1.3GHz */
-	case 0x80860156:                /* IVB */
-	case 0x80860166:                /* IVB */
-		new_vendev=0x80860106;	/* GT1 Mobile */
+	case 0x80860102:		/* SNB GT1 Desktop */
+	case 0x8086010a:		/* SNB GT1 Server */
+	case 0x80860112:		/* SNB GT2 Desktop */
+	case 0x80860116:		/* SNB GT2 Mobile */
+	case 0x80860122:		/* SNB GT2 Desktop >=1.3GHz */
+	case 0x80860126:		/* SNB GT2 Mobile >=1.3GHz */
+	case 0x80860152:		/* IVB GT1 Desktop */
+	case 0x80860156:		/* IVB GT1 Mobile */
+	case 0x80860162:		/* IVB GT2 Desktop */
+	case 0x80860166:		/* IVB GT2 Mobile */
+		new_vendev = 0x80860106;/* SNB GT1 Mobile */
 		break;
 	}