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MLBEDSW-10102: Implement Ethos-U55 transposes

Philip Hall requested to merge MLBEDSW-10102 into main

This commit implements 2-axis transposes for up to rank 3 shapes using AveragePool for both Ethos-U55 and Ethos-U65.

  • Updated shape stride generator to allow asymmetric rank granules.
  • Allow null opgroups for substituted stripes in the Ethos-U55 RCS generator.
  • Implementation also falls back to a memory copy for non-transposes that may reach the RCS.

Signed-off-by: Philip Hall philip.hall@arm.com Change-Id: I09082e71c931a7a9f433ddb1bdc4ed1128e2e95b

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