console: move for_each_console to linux/console.h

Move it out of printk.c so that we can use it all over the code. There
are some potential users which will be converted to that macro in next
patches.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

include/linux/console.h

@@ -126,6 +126,12 @@ struct console {
 	struct	 console *next;
 };
 
+/*
+ * for_each_console() allows you to iterate on each console
+ */
+#define for_each_console(con) \
+	for (con = console_drivers; con != NULL; con = con->next)
+
 extern int console_set_on_cmdline;
 
 extern int add_preferred_console(char *name, int idx, char *options);

kernel/printk.c

@@ -42,12 +42,6 @@
 
 #include <asm/uaccess.h>
 
-/*
- * for_each_console() allows you to iterate on each console
- */
-#define for_each_console(con) \
-	for (con = console_drivers; con != NULL; con = con->next)
-
 /*
  * Architectures can override it:
  */