[PATCH] cdev.h: forward declarations

Apparently this broke due to missing `struct inode' declaration.
Signed-off-by: NJan Engelhardt <jengelh@gmx.de>
Cc: Noah Watkins <nwatkins@ittc.ku.edu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

include/linux/cdev.h

@@ -6,6 +6,10 @@
 #include <linux/kdev_t.h>
 #include <linux/list.h>
 
+struct file_operations;
+struct inode;
+struct module;
+
 struct cdev {
 	struct kobject kobj;
 	struct module *owner;