Add ERROR_IF checks for mismatched batch/channel

Change-Id: I7c670c5f9b97a18a6f586b16f31bc9fc301f6bc3
Signed-off-by: Matthew Haddon <matthew.haddon@arm.com>
diff --git a/verif/tosa_error_if.py b/verif/tosa_error_if.py
index 58595d3..94648d3 100644
--- a/verif/tosa_error_if.py
+++ b/verif/tosa_error_if.py
@@ -27,4 +27,6 @@
     WrongInputList = "WrongInputList"
     WrongOutputList = "WrongOutputList"
     WrongRank = "WrongRank"
+    BatchMismatch = "BatchMismatch"
+    ChannelMismatch = "ChannelMismatch"