x86: Use the correct SPDX License Identifier in headers

Correct the SPDX License Identifier format in a couple of headers.

Suggested-by: Joe Perches <[email protected]>
Signed-off-by: Nishad Kamdar <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Uwe Kleine-König <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: x86-ml <[email protected]>
Link: https://lkml.kernel.org/r/697848ff866ade29e78e872525d7a3067642fd37.1555427420.git.nishadkamdar@gmail.com

Author: nishadkamdar

arch/x86/include/asm/cpu_entry_area.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 
 #ifndef _ASM_X86_CPU_ENTRY_AREA_H
 #define _ASM_X86_CPU_ENTRY_AREA_H

arch/x86/include/asm/pti.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_X86_PTI_H
 #define _ASM_X86_PTI_H
 #ifndef __ASSEMBLY__

arch/x86/kernel/process.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 //
 // Code shared between 32 and 64 bit