x86: make clear_fixmap() available on 64-bit as well

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h
index eb16651..4b96148 100644
--- a/include/asm-x86/fixmap_32.h
+++ b/include/asm-x86/fixmap_32.h
@@ -10,8 +10,8 @@
  * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
  */
 
-#ifndef _ASM_FIXMAP_H
-#define _ASM_FIXMAP_H
+#ifndef _ASM_FIXMAP_32_H
+#define _ASM_FIXMAP_32_H
 
 
 /* used by vmalloc.c, vsyscall.lds.S.
@@ -121,9 +121,6 @@
 #define set_fixmap_nocache(idx, phys)			\
 	__set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
 
-#define clear_fixmap(idx)			\
-	__set_fixmap(idx, 0, __pgprot(0))
-
 #define FIXADDR_TOP	((unsigned long)__FIXADDR_TOP)
 
 #define __FIXADDR_SIZE	(__end_of_permanent_fixed_addresses << PAGE_SHIFT)