cuda: update uncoalesced memory reads in pool2d (#29425)
* cuda: update uncoalesced memory reads in pool2d
* cuda: Added perf and __restrict__ in pool2d
* Update POOL2D_WARP_KERNEL_MIN_WINDOW macro
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
* cuda: Fix compiler bugs
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Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>