lib/dynamic_queue_limits.c: simplify includes

The file doesn't use anything from ctype.h. Instead of module.h, just use
export.h for EXPORT_SYMBOL. The latter requires the user to include
compiler.h, so do that explicitly instead of relying on some other header
pulling it in.

Signed-off-by: Rasmus Villemoes <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

lib/dynamic_queue_limits.c

···
  *
  * Copyright (c) 2011, Tom Herbert <[e-mail]>
  */
-#include <linux/module.h>
 #include <linux/types.h>
-#include <linux/ctype.h>
 #include <linux/kernel.h>
 #include <linux/jiffies.h>
 #include <linux/dynamic_queue_limits.h>
+#include <linux/compiler.h>
+#include <linux/export.h>
 
 #define POSDIFF(A, B) ((int)((A) - (B)) > 0 ? (A) - (B) : 0)
 #define AFTER_EQ(A, B) ((int)((A) - (B)) >= 0)