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/g45/Makefile.inc b/common/g45/Makefile.inc
new file mode 100644
index 0000000..6b598cb
--- /dev/null
+++ b/common/g45/Makefile.inc
@@ -0,0 +1,15 @@
+gfxinit-y += hw-gfx-gma-connectors.adb
+gfxinit-y += hw-gfx-gma-gmch-dp.adb
+gfxinit-y += hw-gfx-gma-gmch-dp.ads
+gfxinit-y += hw-gfx-gma-gmch-hdmi.adb
+gfxinit-y += hw-gfx-gma-gmch-hdmi.ads
+gfxinit-y += hw-gfx-gma-gmch-lvds.adb
+gfxinit-y += hw-gfx-gma-gmch-lvds.ads
+gfxinit-y += hw-gfx-gma-gmch-vga.adb
+gfxinit-y += hw-gfx-gma-gmch-vga.ads
+gfxinit-y += hw-gfx-gma-plls.adb
+gfxinit-y += hw-gfx-gma-plls.ads
+gfxinit-y += hw-gfx-gma-port_detect.adb
+gfxinit-y += hw-gfx-gma-gmch.ads
+gfxinit-y += hw-gfx-gma-power_and_clocks.ads
+gfxinit-y += hw-gfx-gma-power_and_clocks.adb
\ No newline at end of file