INT transit for tofino (only with spgw enabled)

Because of recent update in p4c that uses different names for
P4 entities, requires manual search/replace in p4info/context.json

Change-Id: If7d6ea738710ef0c8786d9ff07f21f240fb6cedc
diff --git a/pipelines/fabric/src/main/resources/include/checksum.p4 b/pipelines/fabric/src/main/resources/include/checksum.p4
index d920235..4d1b803 100644
--- a/pipelines/fabric/src/main/resources/include/checksum.p4
+++ b/pipelines/fabric/src/main/resources/include/checksum.p4
@@ -29,7 +29,8 @@
             {
                 hdr.ipv4.version,
                 hdr.ipv4.ihl,
-                hdr.ipv4.diffserv,
+                hdr.ipv4.dscp,
+                hdr.ipv4.ecn,
                 hdr.ipv4.total_len,
                 hdr.ipv4.identification,
                 hdr.ipv4.flags,
@@ -57,7 +58,8 @@
             {
                 hdr.ipv4.version,
                 hdr.ipv4.ihl,
-                hdr.ipv4.diffserv,
+                hdr.ipv4.dscp,
+                hdr.ipv4.ecn,
                 hdr.ipv4.total_len,
                 hdr.ipv4.identification,
                 hdr.ipv4.flags,