[qca-nss-ecm] Modifications to support PPPoE type interfaces

Change-Id: I1f08c14f144289de05eadc752d8f52b45d141689
Signed-off-by: Gareth Williams <garethw@codeaurora.org>
diff --git a/ecm_interface.h b/ecm_interface.h
index 5c22c0a..6490310 100644
--- a/ecm_interface.h
+++ b/ecm_interface.h
@@ -15,6 +15,16 @@
  */
 
 /*
+ * ECM_INTERFACE_PPP_SUPPORT
+ *	Comment this line out to disable support for working with PPP interfaces
+ *
+ * The ECM requires specific kernel API changes to work with PPP channels and channel type specific API's
+ * If your kernel does not have this support - or - you do not wish to support PPP interface types -
+ * comment this line out.
+ */
+#define ECM_INTERFACE_PPP_SUPPORT
+
+/*
  * struct ecm_interface_route
  *	An ecm route supports either v4 or v6 routing information
  */