IVGCVSW-3140 Fix Hal 1.1 Softmax failures on Android Q

 * Add support for Softmax Axis parameter.

!armnn:1567

Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
Change-Id: I7e47d36f13b122dbad7976c0d59773845bc182b1
diff --git a/NnapiSupport.txt b/NnapiSupport.txt
index 8c7a814..a57768d 100644
--- a/NnapiSupport.txt
+++ b/NnapiSupport.txt
@@ -54,6 +54,7 @@
 MINIMUM                      (FLOAT32,QUANT8_ASYMM)
 PRELU                        (FLOAT32,QUANT8_ASYMM)
 RESIZE_NEAREST_NEIGHBOR      (FLOAT32,QUANT8_ASYMM)
+SOFTMAX                      (FLOAT32,QUANT8_ASYMM)
 
 --- Unsupported operators ---