audio: host-zephyr: Allocate DMA block configuration on heap #8867
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Currently, the DMA block configuration (struct dma_block_config) is placed on the stack during host_common_params(). Later on, host_copy_one_shot() tries to re-configure the DMAC driver using the same block configuration that's located in a stack frame that's no longer valid. As such, allocate a DMA block configuration on the heap during host_common_params() which can be used later on (e.g: during host_copy_one_shot()) to reconfigure the DMAC.
Cherry-picked from #8859