Remove #ifdef CONFIG_SC520 in source code

CONFIG_SC520 is now used for conditional compile

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
diff --git a/cpu/i386/sc520.c b/cpu/i386/sc520.c
index 50bd8ef..12e8f38 100644
--- a/cpu/i386/sc520.c
+++ b/cpu/i386/sc520.c
@@ -25,9 +25,6 @@
  * but idependent of implementation */
 
 #include <config.h>
-
-#ifdef CONFIG_SC520
-
 #include <common.h>
 #include <config.h>
 #include <pci.h>
@@ -517,4 +514,3 @@
 	/* NOTREACHED */
 }
 #endif
-#endif /* CONFIG_SC520 */