Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/mfd/cs5535-mfd.c b/drivers/mfd/cs5535-mfd.c
index f9d277f..f1825c0 100644
--- a/drivers/mfd/cs5535-mfd.c
+++ b/drivers/mfd/cs5535-mfd.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * cs5535-mfd.c - core MFD driver for CS5535/CS5536 southbridges
  *
@@ -7,19 +8,6 @@
  * hardcoded in the CS553x specifications.
  *
  * Copyright (c) 2010  Andres Salomon <dilinger@queued.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <linux/kernel.h>
@@ -112,22 +100,10 @@
 	},
 };
 
-#ifdef CONFIG_OLPC
-static void cs5535_clone_olpc_cells(void)
-{
-	static const char *acpi_clones[] = {
-		"olpc-xo1-pm-acpi",
-		"olpc-xo1-sci-acpi"
-	};
-
-	if (!machine_is_olpc())
-		return;
-
-	mfd_clone_cell("cs5535-acpi", acpi_clones, ARRAY_SIZE(acpi_clones));
-}
-#else
-static void cs5535_clone_olpc_cells(void) { }
-#endif
+static const char *olpc_acpi_clones[] = {
+	"olpc-xo1-pm-acpi",
+	"olpc-xo1-sci-acpi"
+};
 
 static int cs5535_mfd_probe(struct pci_dev *pdev,
 		const struct pci_device_id *id)
@@ -157,7 +133,9 @@
 		dev_err(&pdev->dev, "MFD add devices failed: %d\n", err);
 		goto err_disable;
 	}
-	cs5535_clone_olpc_cells();
+
+	if (machine_is_olpc())
+		mfd_clone_cell("cs5535-acpi", olpc_acpi_clones, ARRAY_SIZE(olpc_acpi_clones));
 
 	dev_info(&pdev->dev, "%zu devices registered.\n",
 			ARRAY_SIZE(cs5535_mfd_cells));