x86: Fix ASM_X86__ header guards

Change header guards named "ASM_X86__*" to "_ASM_X86_*" since:

a. the double underscore is ugly and pointless.
b. no leading underscore violates namespace constraints.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/include/asm/suspend_32.h b/arch/x86/include/asm/suspend_32.h
index acb6d4d..a5074bd 100644
--- a/arch/x86/include/asm/suspend_32.h
+++ b/arch/x86/include/asm/suspend_32.h
@@ -3,8 +3,8 @@
  * Based on code
  * Copyright 2001 Patrick Mochel <mochel@osdl.org>
  */
-#ifndef ASM_X86__SUSPEND_32_H
-#define ASM_X86__SUSPEND_32_H
+#ifndef _ASM_X86_SUSPEND_32_H
+#define _ASM_X86_SUSPEND_32_H
 
 #include <asm/desc.h>
 #include <asm/i387.h>
@@ -48,4 +48,4 @@
 extern int acpi_save_state_mem(void);
 #endif
 
-#endif /* ASM_X86__SUSPEND_32_H */
+#endif /* _ASM_X86_SUSPEND_32_H */