Add negative testing support to fully_connected, matmul, argmax

Change-Id: I75f2a4ab6790dcbdfaec064f42f601d8f44da70b
Signed-off-by: Matthew Haddon <matthew.haddon@arm.com>
diff --git a/verif/tosa_error_if.py b/verif/tosa_error_if.py
index 5e219cc..35a391e 100644
--- a/verif/tosa_error_if.py
+++ b/verif/tosa_error_if.py
@@ -31,9 +31,12 @@
     ChannelMismatch = "ChannelMismatch"
     RankMismatch = "RankMismatch"
     InputZeroPointNotZero = "InputZeroPointNotZero"
+    WeightZeroPointNotZero = "WeightZeroPointNotZero"
     OutputZeroPointNotZero = "OutputZeroPointNotZero"
     AxisSmallerZero = "AxisSmallerZero"
     AxisLargerRank = "AxisLargerRank"
+    ArgmaxOutputShapeMismatch = "ArgmaxOutputShapeMismatch"
+    ArgmaxOutputRankMismatch = "ArgmaxOutputRankMismatch"
     ShapeOfAxisNotOne = "ShapeOfAxisNotOne"
     KernelSmallerOne = "KernelSmallerOne"
     StrideSmallerOne = "StrideSmallerOne"