x86/boot: Use <xen/compiler.h>

... rather than opencoding locally.  With this, defs.h is empty so delete it.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

xen/arch/x86/boot/cmdline.c

@@ -30,11 +30,11 @@ asm (
     "    jmp  cmdline_parse_early      \n"
     );
 
+#include <xen/compiler.h>
 #include <xen/kconfig.h>
 #include <xen/macros.h>
 #include <xen/types.h>
 
-#include "defs.h"
 #include "video.h"
 
 /* Keep in sync with trampoline.S:early_boot_opts label! */

xen/arch/x86/boot/defs.h

@@ -1,26 +0,0 @@
-/*
- * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
- *
- * 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.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- *
- * max() was copied from xen/xen/include/xen/kernel.h.
- */
-
-#ifndef __BOOT_DEFS_H__
-#define __BOOT_DEFS_H__
-
-#define __maybe_unused	__attribute__((__unused__))
-#define __packed	__attribute__((__packed__))
-
-#endif /* __BOOT_DEFS_H__ */

xen/arch/x86/boot/reloc.c

@@ -26,11 +26,10 @@ asm (
     "    jmp  reloc                    \n"
     );
 
+#include <xen/compiler.h>
 #include <xen/macros.h>
 #include <xen/types.h>
 
-#include "defs.h"
-
 #include <xen/kconfig.h>
 #include <xen/multiboot.h>
 #include <xen/multiboot2.h>