southbridge/intel/bd82x6x: transition away from device_t

Replace the use of the old device_t definition inside
southbridge/intel/bd82x6x.

The patch has been tested both with the arch/io.h definition of device_t
enabled and disabled in order to ensure compatibility while the
transaction takes place.

Change-Id: I7166bfab7904f80b745855d3bbcfb910cbc89f56
Signed-off-by: Antonello Dettori <dev@dettori.io>
Reviewed-on: https://review.coreboot.org/16407
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index f22fed5..1977c8f 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -66,7 +66,7 @@
 
 #if !defined(__ASSEMBLER__)
 #if !defined(__PRE_RAM__)
-#if !defined(__SMM__)
+#if !defined(__SIMPLE_DEVICE__)
 #include "chip.h"
 void pch_enable(device_t dev);
 #endif