Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/edac/fsl_ddr_edac.h b/drivers/edac/fsl_ddr_edac.h
index 4ccee29..589b9b4 100644
--- a/drivers/edac/fsl_ddr_edac.h
+++ b/drivers/edac/fsl_ddr_edac.h
@@ -2,8 +2,8 @@
  * Freescale Memory Controller kernel module
  *
  * Support  Power-based SoCs including MPC85xx, MPC86xx, MPC83xx and
- * ARM-based Layerscape SoCs including LS2xxx. Originally split
- * out from mpc85xx_edac EDAC driver.
+ * ARM-based Layerscape SoCs including LS2xxx and LS1021A. Originally
+ * split out from mpc85xx_edac EDAC driver.
  *
  * Author: Dave Jiang <djiang@mvista.com>
  *