Support for different tofino systems (mavericks and montara)

The tofino driver will now register two pipeconf, one for each system.
The right one should be injected via netcfg.

Change-Id: I0fc3e8afa6fedef13d1ab7067811707748e8e916
diff --git a/tools/test/p4src/p4-14/p4c-out/tofino/default/mavericks/context/deparser.context.json b/tools/test/p4src/p4-14/p4c-out/tofino/default/mavericks/context/deparser.context.json
new file mode 100644
index 0000000..38cb306
--- /dev/null
+++ b/tools/test/p4src/p4-14/p4c-out/tofino/default/mavericks/context/deparser.context.json
@@ -0,0 +1,24 @@
+{
+  "ingress": {
+    "pov_mappings": {
+      "32": "packet_in_hdr", 
+      "33": "packet_out_hdr", 
+      "34": "ethernet", 
+      "35": "ipv4", 
+      "36": "tcp", 
+      "37": "udp", 
+      "38": "metadata_bridge", 
+      "16": "_bridged_intr_md_"
+    }
+  }, 
+  "egress": {
+    "pov_mappings": {
+      "0": "packet_in_hdr", 
+      "1": "packet_out_hdr", 
+      "2": "ethernet", 
+      "3": "ipv4", 
+      "4": "tcp", 
+      "5": "udp"
+    }
+  }
+}
\ No newline at end of file