Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h
index 3094af6..5704fa0 100644
--- a/include/uapi/linux/cec.h
+++ b/include/uapi/linux/cec.h
@@ -144,6 +144,7 @@
 
 /* cec_msg flags field */
 #define CEC_MSG_FL_REPLY_TO_FOLLOWERS	(1 << 0)
+#define CEC_MSG_FL_RAW			(1 << 1)
 
 /* cec_msg tx/rx_status field */
 #define CEC_TX_STATUS_OK		(1 << 0)