VOL-4499: Update 'device_flow' struct to have the flow_type. This
will enable the voltha openolt adapter to just send the voltha-flow-id
and the agent can retrieve the flow_type automatically from the
device_flow struct.

VOL-4520: Allow configurability of MAC Device Activation delay time.
With BAL3.10.2.2 it is observed the Edgecore OLTs sometimes need more
time to do the Maple/Aspen download procedure as part of MAC activation.
The current 200ms delay has recomendded to increase to 2s as a
workaround by Edgecore (ticket #19146). This patch makes this delay
configurable on a per platform basis.

Version bumped to 3.6.3

Change-Id: I3bac3af423aa6374c10302519cd21a481d5a4a86
diff --git a/agent/device/generic/vendor.h b/agent/device/generic/vendor.h
index 4a94df1..8d2a5a0 100644
--- a/agent/device/generic/vendor.h
+++ b/agent/device/generic/vendor.h
@@ -36,4 +36,6 @@
 #define MAX_FLOW_ID 65535
 #define INVALID_FLOW_ID 0
 
+#define MAC_DEVICE_ACTIVATION_DELAY 200000 // in microseconds
+
 #endif