msm-geni-serial: Use dma_alloc_coherent to avoid dma map/unmap
Use dma_alloc_coherent and dma_free_coherent to avoid dma_map/ dma_unmap calls for every UART rx transfer. Change-Id: Ide709d28fff0e4914d093381a3cc751fd7343337 Signed-off-by:Prudhvi Yarlagadda <pyarlaga@codeaurora.org> Signed-off-by:
Mukesh Kumar Savaliya <msavaliy@codeaurora.org>
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