MLBEDSW-2688: Improved LUT support

- Support for more than one 256-byte LUT in SHRAM
- No DMA is performed for a LUT that is already located in SHRAM
- Added MemArea.Shram, used for LUT, to avoid false address collision
  asserts during SRAM tensor allocation
- Added read access to LUT in memory access calculation

Change-Id: If4d1eded5ed029d253f4f5efb2d80495fc3eac99
Signed-off-by: Louis Verhaard <louis.verhaard@arm.com>
diff --git a/ethosu/vela/test/test_live_range.py b/ethosu/vela/test/test_live_range.py
index 395d0f3..d087dd9 100644
--- a/ethosu/vela/test/test_live_range.py
+++ b/ethosu/vela/test/test_live_range.py
@@ -18,6 +18,7 @@
 from unittest.mock import MagicMock
 
 import pytest
+
 from ethosu.vela.live_range import LiveRange