sb/intel: Factor out ICH ACPI for HDA

Files are identical between all three southbridges, and differ for PCH.

Change-Id: Ic6a926af675bda3db3a5795df9e8f490caf3ebf4
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43156
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/i82801ix/acpi/ich9.asl b/src/southbridge/intel/i82801ix/acpi/ich9.asl
index 115c254..25a756e 100644
--- a/src/southbridge/intel/i82801ix/acpi/ich9.asl
+++ b/src/southbridge/intel/i82801ix/acpi/ich9.asl
@@ -151,7 +151,7 @@
 }
 
 // 0:1b.0 High Definition Audio (Azalia)
-#include "audio.asl"
+#include <southbridge/intel/common/acpi/audio_ich.asl>
 
 // PCI Express Ports
 #include <southbridge/intel/common/acpi/pcie.asl>