[PATCH] isdn/eicon/eicon_mod.c build fix

From: Adrian Bunk <bunk@fs.tum.de>

  CC [M]  drivers/isdn/eicon/eicon_mod.o
drivers/isdn/eicon/eicon_mod.c: In function `eicon_exit':
drivers/isdn/eicon/eicon_mod.c:1362: warning: implicit declaration of
function `mca_mark_as_unused'

drivers/isdn/eicon/eicon_mod.c

@@ -29,6 +29,7 @@
 #include <linux/init.h>
 #ifdef CONFIG_MCA
 #include <linux/mca.h>
+#include <linux/mca-legacy.h>
 #endif /* CONFIG_MCA */
 
 #include "eicon.h"