constify a bunch of struct file_operations instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 5247d94..8dc057b 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -152,7 +152,7 @@
 }
 
 
-static struct file_operations lirc_dev_fops = {
+static const struct file_operations lirc_dev_fops = {
 	.owner		= THIS_MODULE,
 	.read		= lirc_dev_fop_read,
 	.write		= lirc_dev_fop_write,