Added P4Runtime-based Barefoot Tofino driver

Change-Id: I09ba8dd4468fa5a792ca481921e8a51dad49702e
diff --git a/core/api/src/main/java/org/onosproject/net/pi/model/PiPipeconf.java b/core/api/src/main/java/org/onosproject/net/pi/model/PiPipeconf.java
index f56fef3..0185e9b 100644
--- a/core/api/src/main/java/org/onosproject/net/pi/model/PiPipeconf.java
+++ b/core/api/src/main/java/org/onosproject/net/pi/model/PiPipeconf.java
@@ -95,6 +95,11 @@
         /**
          * Barefoot's Tofino configuration binary.
          */
-        TOFINO_BIN
+        TOFINO_BIN,
+
+        /**
+         * Barefoot's Tofino context JSON.
+         */
+        TOFINO_CONTEXT_JSON
     }
 }