(Trivial) Add missing header file.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Rudolf Marek <r.marek@assembler.cz>




git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3967 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/northbridge/amd/amdk8/amdk8_acpi.c

@@ -40,6 +40,7 @@ acknowledgement of AMD's proprietary rights in them.
 #include <console/console.h>
 #include <string.h>
 #include <arch/acpi.h>
+#include <arch/acpigen.h>
 #include <device/pci.h>
 #include <cpu/x86/msr.h>
 #include <cpu/amd/mtrr.h>