IVGCVSW-5804 TfLiteParser fails to correctly parse ArgMinMax

 * Fix for GitHub#523.
 * Updated ParseArgMinMax function to read correct axis data.
 * Improved validation in ParseArgMinMax function.
 * Added ARG_MIN support to TfLiteParser.
 * Added ArgMinMax unit tests for TfLiteParser.

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Ib4ce1a7c66e210c47859a130c4896aac958f2654
diff --git a/docs/01_01_parsers.dox b/docs/01_01_parsers.dox
index ae49303..05e1225 100644
--- a/docs/01_01_parsers.dox
+++ b/docs/01_01_parsers.dox
@@ -158,6 +158,8 @@
 The Arm NN SDK TensorFlow Lite parser currently supports the following operators:
 
 - ADD
+- ARG_MAX
+_ ARG_MIN
 - AVERAGE_POOL_2D, Supported Fused Activation: RELU , RELU6 , TANH, NONE
 - BATCH_TO_SPACE
 - CONCATENATION, Supported Fused Activation: RELU , RELU6 , TANH, NONE