net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules

These files are non modular, but need to export symbols using
the macros now living in export.h -- call out the include so
that things won't break when we remove the implicit presence
of module.h from everywhere.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 437ee70..3a73491 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/skbuff.h>
 #include <linux/bitops.h>
+#include <linux/export.h>
 #include <net/sock.h>		/* for sock_no_* */
 
 #include "resources.h"		/* devs and vccs */