x86/mm/pat: Rename <asm/pat.h> => <asm/memtype.h>

pat.h is a file whose main purpose is to provide the memtype_*() APIs.

PAT is the low level hardware mechanism - but the high level abstraction
is memtype.

So name the header <memtype.h> as well - this goes hand in hand with memtype.c
and memtype_interval.c.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/mm/pat/memtype.c

@@ -52,7 +52,7 @@
 #include <asm/mtrr.h>
 #include <asm/page.h>
 #include <asm/msr.h>
-#include <asm/pat.h>
+#include <asm/memtype.h>
 #include <asm/io.h>
 
 #include "memtype.h"

arch/x86/mm/pat/memtype_interval.c

@@ -16,7 +16,7 @@
 #include <linux/gfp.h>
 
 #include <asm/pgtable.h>
-#include <asm/pat.h>
+#include <asm/memtype.h>
 
 #include "memtype.h"
 

arch/x86/mm/pat/set_memory.c

@@ -24,7 +24,7 @@
 #include <linux/uaccess.h>
 #include <asm/pgalloc.h>
 #include <asm/proto.h>
-#include <asm/pat.h>
+#include <asm/memtype.h>
 #include <asm/set_memory.h>
 
 #include "../mm_internal.h"