ARM: tegra: Sort includes alphabetically

If these aren't sorted alphabetically, then the logical choice is to
append new ones, however that creates a lot of potential for conflicts
because every change will then add new includes in the same location.

Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/mach-tegra/io.c

@@ -18,14 +18,14 @@
  *
  */
 
-#include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/init.h>
-#include <linux/mm.h>
 #include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
 
-#include <asm/page.h>
 #include <asm/mach/map.h>
+#include <asm/page.h>
 
 #include "board.h"
 #include "iomap.h"