gigabyte/ga-g41m-es2l: Add mainboard

Board uses x4x native raminit

Board boots into Debian 8 with full graphics

IRQ9: nobody cared, gets disabled
(PIC needs IRQ settings?)

VGA:
- VGA native init works in grub with analog connector
- Fails to boot with both channels of ram populated

Change-Id: I7417813456817529b8cbaace45cefe47467d0a82
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/11306
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc b/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
new file mode 100644
index 0000000..f9621db
--- /dev/null
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
@@ -0,0 +1 @@
+ramstage-y += cstates.c