x86: Move some contents of page_64_types.h into pgtable_64.h and page_64.h

This patch is meant to clean-up the fact that we have several functions in
page_64_types.h which really don't belong there.  I found this issue when I
had tried to replace __phys_addr with an inline function.  It resulted in the
realmode bits generating compile warnings about types.  In order to resolve
that I am relocating the address translation to page_64.h since this is in
keeping with where these functions are located in 32 bit.

In addtion I have relocated several functions defined in init_64.c to
pgtable_64.h as this seems to be where most of the functions related to
memory initialization were already located.

[ hpa: added missing #include <asm/pgtable.h> to apic_numachip.c,
  as reported by Yinghai Lu. ]

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Link: http://lkml.kernel.org/r/20121116215244.8521.31505.stgit@ahduyck-cp1.jf.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Daniel J Blueman <daniel@numascale-asia.com>

arch/x86/include/asm/pgtable_64.h

@@ -183,6 +183,11 @@ extern void cleanup_highmap(void);
 
 #define __HAVE_ARCH_PTE_SAME
 
+#define vmemmap ((struct page *)VMEMMAP_START)
+
+extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
+extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
+
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _ASM_X86_PGTABLE_64_H */