Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/ethernet/chelsio/Kconfig b/drivers/net/ethernet/chelsio/Kconfig
index e2cdfa7..9909bfd 100644
--- a/drivers/net/ethernet/chelsio/Kconfig
+++ b/drivers/net/ethernet/chelsio/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Chelsio device configuration
 #
@@ -24,7 +25,8 @@
 	---help---
 	  This driver supports Chelsio gigabit and 10-gigabit
 	  Ethernet cards. More information about adapter features and
-	  performance tuning is in <file:Documentation/networking/cxgb.txt>.
+	  performance tuning is in
+	  <file:Documentation/networking/device_drivers/chelsio/cxgb.txt>.
 
 	  For general information about Chelsio and our products, visit
 	  our website at <http://www.chelsio.com>.