x86/include/arch/boot: Fix header guard

While on it, reformat code and remove unused macro.

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I63e413820cb3f4dfa21d1692301348ecdb3190b9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64784
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>

src/arch/x86/include/arch/boot/boot.h

@@ -1,11 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef ASM_I386_BOOT_H
-#define ASM_I386_BOOT_H
-
-#define ELF_CLASS	ELFCLASS32
-#define ELF_DATA	ELFDATA2LSB
-#define ELF_ARCH	EM_386
+#ifndef X86_BOOT_H
+#define X86_BOOT_H
 
 #include <types.h>
 /*
@@ -15,7 +11,6 @@
  *
  * @noreturn
  */
-void protected_mode_jump(uint32_t func_ptr,
-			 uint32_t argument);
+void protected_mode_jump(uint32_t func_ptr, uint32_t argument);
 
-#endif /* ASM_I386_BOOT_H */
+#endif /* X86_BOOT_H */