[POWERPC] macintosh: Replace deprecated __initcall with device_initcall

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

drivers/macintosh/adb.c

@@ -334,7 +334,7 @@ int __init adb_init(void)
 	return 0;
 }
 
-__initcall(adb_init);
+device_initcall(adb_init);
 
 static int
 do_adb_reset_bus(void)