x86/mm: Correct fixmap header usage on adaptable MODULES_END

This patch removes fixmap header usage on non-x86 code that was
introduced by the adaptable MODULE_END change.

Signed-off-by: Thomas Garnier <thgarnie@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20170317175034.4701-1-thgarnie@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/include/asm/pgtable_64.h

@@ -13,6 +13,7 @@
 #include <asm/processor.h>
 #include <linux/bitops.h>
 #include <linux/threads.h>
+#include <asm/fixmap.h>
 
 extern pud_t level3_kernel_pgt[512];
 extern pud_t level3_ident_pgt[512];

arch/x86/kernel/module.c

@@ -35,7 +35,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/setup.h>
-#include <asm/fixmap.h>
 
 #if 0
 #define DEBUGP(fmt, ...)				\

arch/x86/mm/dump_pagetables.c

@@ -20,7 +20,6 @@
 
 #include <asm/kasan.h>
 #include <asm/pgtable.h>
-#include <asm/fixmap.h>
 
 /*
  * The dumper groups pagetable entries of the same type into one, and for

arch/x86/mm/kasan_init_64.c

@@ -9,7 +9,6 @@
 
 #include <asm/tlbflush.h>
 #include <asm/sections.h>
-#include <asm/fixmap.h>
 
 extern pgd_t early_level4_pgt[PTRS_PER_PGD];
 extern struct range pfn_mapped[E820_X_MAX];

mm/vmalloc.c

@@ -36,10 +36,6 @@
 #include <asm/tlbflush.h>
 #include <asm/shmparam.h>
 
-#ifdef CONFIG_X86
-# include <asm/fixmap.h>
-#endif
-
 #include "internal.h"
 
 struct vfree_deferred {