dgnc: remove old 2.4-2.6 compat kernel defines

dgnc_kcompat.h contains some old legacy defines in case the kernel
doesn't have __user defined but for current kernel versions these
defines don't make sense and are useless so remove them. Move the
TTY_FLIPBUF_SIZE define to digi.h because it's used in the code.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.h

@@ -26,7 +26,6 @@
 #include <linux/interrupt.h>	/* For irqreturn_t type */
 
 #include "digi.h"		/* Digi specific ioctl header */
-#include "dgnc_kcompat.h"	/* Kernel 2.4/2.6 compat includes */
 #include "dgnc_sysfs.h"		/* Support for SYSFS */
 
 /*************************************************************************

drivers/staging/dgnc/dgnc_mgmt.c

@@ -30,7 +30,6 @@
 
 #include "dgnc_driver.h"
 #include "dgnc_pci.h"
-#include "dgnc_kcompat.h"	/* Kernel 2.4/2.6 compat includes */
 #include "dgnc_mgmt.h"
 
 

drivers/staging/dgnc/digi.h

@@ -175,4 +175,5 @@ struct ni_info {
 #define T_NEO_EXPRESS 0001
 #define T_NEO 0000
 
+#define TTY_FLIPBUF_SIZE 512
 #endif /* DIGI_H */