Fixing packet_io and regenerating default.p4 for tofino

Change-Id: I5c2c6565f71a13b375a8ec8da864e9157b8e56ed
diff --git a/tools/test/p4src/p4-14/p4c-out/ecmp.p4info b/tools/test/p4src/p4-14/p4c-out/ecmp.p4info
index f6753d0..6a46ab9 100644
--- a/tools/test/p4src/p4-14/p4c-out/ecmp.p4info
+++ b/tools/test/p4src/p4-14/p4c-out/ecmp.p4info
@@ -185,7 +185,7 @@
   spec {
     unit: PACKETS
   }
-  size: 511
+  size: 254
 }
 counters {
   preamble {
@@ -197,7 +197,7 @@
   spec {
     unit: PACKETS
   }
-  size: 511
+  size: 254
 }
 direct_counters {
   preamble {
@@ -245,4 +245,4 @@
     name: "egress_port"
     bitwidth: 9
   }
-}
+}
\ No newline at end of file