[media] wl128x: fix typo in MODULE_PARM_DESC

The module_param() is "default_rds_buf" and the MODULE_PARM_DESC()
should match.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/radio/wl128x/fmdrv_common.c

@@ -68,7 +68,7 @@ MODULE_PARM_DESC(default_radio_region, "Region: 0=Europe/US, 1=Japan");
 /* RDS buffer blocks */
 static u32 default_rds_buf = 300;
 module_param(default_rds_buf, uint, 0444);
-MODULE_PARM_DESC(rds_buf, "RDS buffer entries");
+MODULE_PARM_DESC(default_rds_buf, "RDS buffer entries");
 
 /* Radio Nr */
 static u32 radio_nr = -1;