IVGCVSW-4430 Update NNAPISupport.txt for 20.02

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: If475b0448a1adaa7c08cbdaa5efed1e0eae3c89a
diff --git a/NnapiSupport.txt b/NnapiSupport.txt
index 169a869..84e643a 100644
--- a/NnapiSupport.txt
+++ b/NnapiSupport.txt
@@ -15,6 +15,8 @@
 AndroidNN operator           Tensor type supported
 ABS                          (FLOAT32)
 ADD                          (FLOAT32, QUANT8_ASYMM)
+ARGMAX                       (FLOAT32, QUANT8_ASYMM)
+ARGMIN                       (FLOAT32, QUANT8_ASYMM)
 AVERAGE_POOL_2D              (FLOAT32, QUANT8_ASYMM)
 BATCH_TO_SPACE_ND            (FLOAT32, QUANT8_ASYMM)
 CONCATENATION                (FLOAT32, FLOAT16, QUANT8_ASYMM)