mm: Map most files to use export.h instead of module.h

The files changed within are only using the EXPORT_SYMBOL
macro variants.  They are not using core modular infrastructure
and hence don't need module.h but only the export.h header.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/mm/maccess.c b/mm/maccess.c
index 4cee182..d53adf9 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -1,7 +1,7 @@
 /*
  * Access kernel memory without faulting.
  */
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/mm.h>
 #include <linux/uaccess.h>