ICH9M: default to 256MB VRAM, not 352MB

352MB VRAM causes stability issues, according to some reports

users can still set it to the higher level when building, if
they wish to

resources/coreboot/default/patches/0014-lenovo-x230-introduce-FHD-variant.patch

@@ -1,7 +1,7 @@
-From 5677039fe0535da560bb9bca16e5ff9579203780 Mon Sep 17 00:00:00 2001
+From f60a7e12526ca254b1d98830ad1e31296984e815 Mon Sep 17 00:00:00 2001
 From: Alexander Couzens <lynxis@fe80.eu>
 Date: Sat, 19 Mar 2022 13:42:33 +0000
-Subject: [PATCH 14/16] lenovo/x230: introduce FHD variant
+Subject: [PATCH 14/18] lenovo/x230: introduce FHD variant
 
 There is a modification for the x230 which uses the 2nd DP from the dock
 as the integrated panel's connection, which allows using a custom eDP
@@ -194,5 +194,5 @@ index 0000000000..f7cf0bc264
 +
 +end GMA.Mainboard;
 -- 
-2.30.2
+2.39.2