dmaengine: stm32-dma3: add device_pause and device_resume ops
STM32 DMA3 controller is able to suspend an ongoing transfer (the transfer is suspended after the ongoing burst is flushed to the destination) and resume it from the point it was suspended. No need to reconfigure any register. Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Link: https://lore.kernel.org/r/20240531150712.2503554-9-amelie.delaunay@foss.st.comSigned-off-by: Vinod Koul <vkoul@kernel.org>
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