Update bf-p4c output with most recent fabric.p4 changes from onos-2.2

Also, adds a changelog file to keep track of the fabric.p4 changes
included at a given point in time.

Change-Id: Ia6933ddb392ff5c93d7822a3fd962f609224eba1
diff --git a/pom.xml b/pom.xml
index d377ec6..c943722 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,10 +27,12 @@
 
     <groupId>org.opencord</groupId>
     <artifactId>fabric-tofino</artifactId>
-    <version>2.2.1-SNAPSHOT</version>
+    <version>1.0.0-SNAPSHOT</version>
     <packaging>bundle</packaging>
 
-    <description>Pipeconf to use Trellis with Tofino-based targets</description>
+    <description>
+        Pipeconf to use Trellis with Barefoot Tofino-based devices
+    </description>
     <url>http://www.opencord.org</url>
 
     <properties>
@@ -41,7 +43,7 @@
         <onos.app.url>http://www.opencord.org</onos.app.url>
         <onos.app.readme>
             Provides pipeconfs based on fabric.p4 to use Trellis with Barefoot
-            Tofino-based switches.
+            Tofino-based devices.
         </onos.app.readme>
         <onos.app.requires>
             org.onosproject.pipelines.fabric