net: Fix files explicitly needing to include module.h

With calls to modular infrastructure, these files really
needs the full module.h header.  Call it out so some of the
cleanups of implicit and unrequired includes elsewhere can be
cleaned up.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index f17fd84..2ba6e9f 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -30,6 +30,7 @@
 #include <asm/ioctls.h>
 
 #include <linux/phonet.h>
+#include <linux/module.h>
 #include <net/phonet/phonet.h>
 #include <net/phonet/pep.h>
 #include <net/phonet/gprs.h>