Add default VLAN 4094 tag to all untagged traffic in fabric.p4

Also fix nop action in ingres_port_vlan table not invoking direct
counter.

This allows processing LLDP packets before any SR-related flow rule is
pushed

Change-Id: Ic6c33ff0c74e643d9e7c853e029bff924ba6f2ac
(cherry picked from commit 0433a9d002c6a9533ffd55de709aba5a6ca26f04)
diff --git a/pipelines/fabric/src/main/resources/include/define.p4 b/pipelines/fabric/src/main/resources/include/define.p4
index d717853..77808bd 100644
--- a/pipelines/fabric/src/main/resources/include/define.p4
+++ b/pipelines/fabric/src/main/resources/include/define.p4
@@ -106,6 +106,9 @@
 const fwd_type_t FWD_IPV4_MULTICAST = 3;
 const fwd_type_t FWD_IPV6_UNICAST = 4;
 const fwd_type_t FWD_IPV6_MULTICAST = 5;
+const fwd_type_t FWD_UNKNOWN = 7;
+
+const vlan_id_t DEFAULT_VLAN_ID = 12w4094;
 
 const bit<8> DEFAULT_MPLS_TTL = 64;
 const bit<8> DEFAULT_IPV4_TTL = 64;