Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/powerpc/oprofile/common.c b/arch/powerpc/oprofile/common.c
index bf094c5..0fb528c 100644
--- a/arch/powerpc/oprofile/common.c
+++ b/arch/powerpc/oprofile/common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * PPC 64 oprofile support:
  * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
@@ -6,11 +7,6 @@
  *	Author: Andy Fleming
  *
  * Based on alpha version.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
  */
 
 #include <linux/oprofile.h>
@@ -212,7 +208,7 @@
 			model = &op_model_pa6t;
 			break;
 #endif
-#ifdef CONFIG_6xx
+#ifdef CONFIG_PPC_BOOK3S_32
 		case PPC_OPROFILE_G4:
 			model = &op_model_7450;
 			break;