x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular

The file pageattr.c is obj-y and it includes pageattr-test.c
based on CPA_DEBUG (a bool), meaning that no code here is
currently being built as a module by anyone.

Lets remove the couple traces of modularity so that when reading
the code there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the
non-modular case, the init ordering remains unchanged with this
commit.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1440459295-21814-3-git-send-email-paul.gortmaker@windriver.comSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/mm/pageattr-test.c

@@ -8,6 +8,7 @@
 #include <linux/kthread.h>
 #include <linux/random.h>
 #include <linux/kernel.h>
+#include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/vmalloc.h>
 
@@ -256,5 +257,4 @@ static int start_pageattr_test(void)
 
 	return 0;
 }
-
-module_init(start_pageattr_test);
+device_initcall(start_pageattr_test);

arch/x86/mm/pageattr.c

@@ -4,7 +4,6 @@
  */
 #include <linux/highmem.h>
 #include <linux/bootmem.h>
-#include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>