qemu: add q35 support

Add support for the new q35 chipset emulation
added in qemu 1.4.

Change-Id: Iabfaa1310dc7b54c9d224635addebdfafe1fbfaf
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-on: http://review.coreboot.org/3430
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/cpu/qemu-x86/Makefile.inc b/src/cpu/qemu-x86/Makefile.inc
index e206b4d..c65fcd0 100644
--- a/src/cpu/qemu-x86/Makefile.inc
+++ b/src/cpu/qemu-x86/Makefile.inc
@@ -19,3 +19,4 @@
 ramstage-y += qemu.c
 subdirs-y += ../x86/mtrr
 subdirs-y += ../x86/lapic
+subdirs-y += ../x86/smm