hexagon: add pool op support (#29995)
* hexagon: add pool_2d support
* hexagon: add pool_1d support
* hex-pool: dma changes
* hex-pool: Optimize HTP pooling boundaries and DMA pipelining
* hex-pool: code cleanup and correctness fixes
* hex-pool: re-write the DMA pipeline
* hex-pool: pool chunking support
* hex-pool: remove/vectorize all scalar paths
* hex-pool: simplify chunk solver (no need for a loop)
* hex-pool: remove redundant checks
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Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>
