media: cec: add adap_free op

This is needed for CEC adapters that allocate resources that have
to be freed before the cec_adapter is deleted.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/include/media/cec.h b/include/media/cec.h
index e1e60db..3776820 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -114,6 +114,7 @@
 	int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,
 			     u32 signal_free_time, struct cec_msg *msg);
 	void (*adap_status)(struct cec_adapter *adap, struct seq_file *file);
+	void (*adap_free)(struct cec_adapter *adap);
 
 	/* High-level CEC message callback */
 	int (*received)(struct cec_adapter *adap, struct cec_msg *msg);