gma: Add G45 support

The following ports are implemented: HDMI/DVI, VGA, LVDS and DP.

Tested with gfx_test and coreboot on a Thinkpad X200 (GM45).

Change-Id: Ifc05a1516329a61772af84558e5bfceb4d4ca277
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/21295
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: Nico Huber <nico.h@gmx.de>
diff --git a/common/hw-gfx-gma-pch.ads b/common/hw-gfx-gma-pch.ads
index 619ccb6..106d2e8 100644
--- a/common/hw-gfx-gma-pch.ads
+++ b/common/hw-gfx-gma-pch.ads
@@ -26,13 +26,13 @@
      (case Config.CPU is
          when Ironlake                       => 30,
          when Sandybridge | Ivybridge        => 29,
-         when Haswell .. Skylake             =>  0);
+         when others                         =>  0);
 
    PCH_TRANSCODER_SELECT_MASK : constant :=
      (case Config.CPU is
          when Ironlake                       => 1 * 2 ** 30,
          when Sandybridge | Ivybridge        => 3 * 2 ** 29,
-         when Haswell .. Skylake             =>           0);
+         when others                         =>  0);
 
    type PCH_TRANSCODER_SELECT_Array is array (FDI_Port_Type) of Word32;
    PCH_TRANSCODER_SELECT : constant PCH_TRANSCODER_SELECT_Array :=