staging: dgnc: make dgnc_num_boards static

There's no need for the world to know the number of dgnc boards in the
system, so just make it a static variable.

Cc: Lidza Louina <lidza.louina@gmail.com>
Cc: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -20,7 +20,7 @@ MODULE_AUTHOR("Digi International, http://www.digi.com");
 MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
 MODULE_SUPPORTED_DEVICE("dgnc");
 
-uint			dgnc_num_boards;
+static unsigned int dgnc_num_boards;
 struct dgnc_board		*dgnc_board[MAXBOARDS];
 DEFINE_SPINLOCK(dgnc_global_lock);
 DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */

drivers/staging/dgnc/dgnc_driver.h

@@ -376,7 +376,6 @@ extern uint		dgnc_major;		/* Our driver/mgmt major */
 extern int		dgnc_poll_tick;		/* Poll interval - 20 ms */
 extern spinlock_t	dgnc_global_lock;	/* Driver global spinlock */
 extern spinlock_t	dgnc_poll_lock;		/* Poll scheduling lock */
-extern uint		dgnc_num_boards;	/* Total number of boards */
 extern struct dgnc_board *dgnc_board[MAXBOARDS];/* Array of boards */
 
 #endif	/* _DGNC_DRIVER_H */