drivers/input: Add module.h to modular drivers implicitly using it

A pending cleanup will mean that module.h won't be implicitly
everywhere anymore.  Make sure the modular drivers in input dir
are actually calling out for <module.h> explicitly in advance.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

drivers/input/input-polldev.c

@@ -14,6 +14,7 @@
 #include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/workqueue.h>
+#include <linux/module.h>
 #include <linux/input-polldev.h>
 
 MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>");