V4L/DVB (9185): S2API: Ensure we have a reasonable ROLLOFF default

Non-initialised cache values get a reasonble default.

Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index e185627..6e4ace2 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -284,9 +284,9 @@
 } fe_pilot_t;
 
 typedef enum fe_rolloff {
+	ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
 	ROLLOFF_20,
 	ROLLOFF_25,
-	ROLLOFF_35,
 	ROLLOFF_AUTO,
 } fe_rolloff_t;