[PATCH mm 2/4] kfence, x86: add missing copyright and description header

[Marco Elver]

Add missing copyright and description header to KFENCE source file.

Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
---
If appropriate, to be squashed into:

	x86, kfence: enable KFENCE for x86
---
 arch/x86/include/asm/kfence.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/include/asm/kfence.h b/arch/x86/include/asm/kfence.h
index 2f3f877a7a5c..97bbb4a9083a 100644
--- a/arch/x86/include/asm/kfence.h
+++ b/arch/x86/include/asm/kfence.h
@@ -1,4 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * x86 KFENCE support.
+ *
+ * Copyright (C) 2020, Google LLC.
+ */
 
 #ifndef _ASM_X86_KFENCE_H
 #define _ASM_X86_KFENCE_H
-- 
2.30.0.284.gd98b1dd5eaa7-goog