x86: headers cleanup - boot.h

Impact: cleanup

'make headers_check' warn us about leaking of kernel private
(mostly compile time vars) data to userspace in headers. Fix it.

Neither BOOT_HEAP_SIZE, BOOT_STACK_SIZE refs
was found by searching thru net (ie in user-space area)
so fence this all by __KERNEL__ guard.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/include/asm/boot.h

@@ -10,27 +10,31 @@
 #define EXTENDED_VGA	0xfffe		/* 80x50 mode */
 #define ASK_VGA		0xfffd		/* ask for it at bootup */
 
+#ifdef __KERNEL__
+
 /* Physical address where kernel should be loaded. */
 #define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
 				+ (CONFIG_PHYSICAL_ALIGN - 1)) \
 				& ~(CONFIG_PHYSICAL_ALIGN - 1))
 
-#if (defined CONFIG_KERNEL_BZIP2)
+#ifdef CONFIG_KERNEL_BZIP2
 #define BOOT_HEAP_SIZE             0x400000
-#else
+#else /* !CONFIG_KERNEL_BZIP2 */
 
 #ifdef CONFIG_X86_64
 #define BOOT_HEAP_SIZE	0x7000
 #else
 #define BOOT_HEAP_SIZE	0x4000
 #endif
 
-#endif
+#endif /* !CONFIG_KERNEL_BZIP2 */
 
 #ifdef CONFIG_X86_64
 #define BOOT_STACK_SIZE	0x4000
 #else
 #define BOOT_STACK_SIZE	0x1000
 #endif
 
+#endif /* __KERNEL__ */
+
 #endif /* _ASM_X86_BOOT_H */