Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/media/cec/cec-priv.h b/drivers/media/cec/cec-priv.h
index 804e38f..7bdf855 100644
--- a/drivers/media/cec/cec-priv.h
+++ b/drivers/media/cec/cec-priv.h
@@ -20,6 +20,11 @@
 /* devnode to cec_adapter */
 #define to_cec_adapter(node) container_of(node, struct cec_adapter, devnode)
 
+static inline bool msg_is_raw(const struct cec_msg *msg)
+{
+	return msg->flags & CEC_MSG_FL_RAW;
+}
+
 /* cec-core.c */
 extern int cec_debug;
 int cec_get_device(struct cec_devnode *devnode);