TOSA: Support for AVGPOOL, MAXPOOL and CONV2D

Added support for
-AVGPOOL and CONV2D with TFLite correspondence
-MAXPOOL
-additional support for replacing RESCALE ops with avgpool.

No support for breaking down tensors over the
size supported by NPU.

Signed-off-by: Patrik Gustavsson <patrik.gustavsson@arm.com>
Change-Id: I1d2aa50ac30a26283b3e6f1fe88cba1544b7c189
diff --git a/ethosu/vela/api.py b/ethosu/vela/api.py
index 69c6040..d516b8d 100644
--- a/ethosu/vela/api.py
+++ b/ethosu/vela/api.py
@@ -25,6 +25,7 @@
 
 import numpy
 
+
 API_VERSION_MAJOR = 1
 API_VERSION_MINOR = 1
 API_VERSION = f"{API_VERSION_MAJOR}.{API_VERSION_MINOR}"