MLBEDSW-9771: Add support for IFM rounding
- Add roundMode to tensorConnection and schedulerConnection. This makes rounding configurable for every connected tensor and supports IFM-fusing of rescales with natural rounding.
- Add IFM-rounding functionality to Ethos-U85 and Ethos-U55 RCS-gen.
- Remove SetRounding from GraphAPI
Change-Id: Ifafa5a9b30974f80c9c4929b6d2d168a0591bea5 Signed-off-by: Alexander Bengtsson Alexander.Bengtsson@arm.com