s390/dasd: Add missing intensity definition

The definition for the bit that removes the write permission for record
zero when formatting was missing. Add it to complete the list.
Signed-off-by: NJan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: NStefan Haberland <sth@linux.ibm.com>
Signed-off-by: NVasily Gorbik <gor@linux.ibm.com>

arch/s390/include/uapi/asm/dasd.h

@@ -193,6 +193,7 @@ typedef struct format_data_t {
 #define DASD_FMT_INT_FMT_HA	2	/* write home address, also set FMT_R0 ! */
 #define DASD_FMT_INT_INVAL	4	/* invalidate tracks */
 #define DASD_FMT_INT_COMPAT	8	/* use OS/390 compatible disk layout */
+#define DASD_FMT_INT_FMT_NOR0	16	/* remove permission to write record zero */
 
 /*
  * struct format_check_t