azalia: Shrink boilerplate

Change-Id: Ib3e09644c0ee71aacb067adaa85653d151b52078
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6840
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
index e504db0..3b7663e 100644
--- a/src/southbridge/intel/lynxpoint/Makefile.inc
+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
@@ -35,6 +35,8 @@
 ramstage-y += hda_verb.c
 ramstage-$(CONFIG_INTEL_LYNXPOINT_LP) += serialio.c
 
+ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/hda_verb.c
+
 ramstage-y += rcba.c
 ramstage-y += me_status.c
 ramstage-y += reset.c