UBI: make it possible to use struct ubi_device in debug.h

Current layout does not allow us to add inline functions to debug.h which use
the 'struct ubi_device' object, because it is undefined there. Move
'#include "debug.h"' in "ubi.h" down so to make 'struct ubi_device" be defined.
Additionally, this makes it possible to remove a bunch of forward declarations
in "debug.h". This is a preparation to the next patch.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index d0e3218..fd19f8d 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -44,7 +44,6 @@
 
 #include "ubi-media.h"
 #include "scan.h"
-#include "debug.h"
 
 /* Maximum number of supported UBI devices */
 #define UBI_MAX_DEVICES 32
@@ -478,6 +477,8 @@
 	struct ubi_debug_info *dbg;
 };
 
+#include "debug.h"
+
 extern struct kmem_cache *ubi_wl_entry_slab;
 extern const struct file_operations ubi_ctrl_cdev_operations;
 extern const struct file_operations ubi_cdev_operations;