vnet: add vnet_register_device_class function

To allow dynamic registration of device classes..."

Change-Id: Ie8435e8c55b7e300be06abe97b653c0c3ce7f732
Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/interface.h b/src/vnet/interface.h
index 8ba5c99..f0cb540 100644
--- a/src/vnet/interface.h
+++ b/src/vnet/interface.h
@@ -292,6 +292,8 @@
 
 } vnet_device_class_t;
 
+u32 vnet_register_device_class (vlib_main_t *, vnet_device_class_t *);
+
 #ifndef CLIB_MARCH_VARIANT
 #define VNET_DEVICE_CLASS(x,...)                                        \
   __VA_ARGS__ vnet_device_class_t x;                                    \