MLBEDSW-1971: Verify ifm block size calculation against specification

This commit ensures the IFM block size calculation
in architecture_features.py matches the specification
by correctly setting the ifm upscaling factor based on
the upscaling mode.

This requires adding an attribute to the Tensor object
which stores the upscaling mode for that specific
tensor and making sure that information is correctly
carried over to shared_buffer_allocation.py.

Signed-off-by: Dwight Lidman <dwight.lidman@arm.com>
Change-Id: I4ab56086f4c694d3bf759bbad30cdb969b4a26db