dmaengine: add a driver for AMBA AXI NBPF DMAC IP cores

This patch adds a driver for NBPF DMAC IP cores from Renesas, designed for
the AMBA AXI bus.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index d4f0415..901818c 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -383,6 +383,12 @@
 	help
 	  Support for the DMA engine for Allwinner A31 SoCs.
 
+config NBPFAXI_DMA
+	tristate "Renesas Type-AXI NBPF DMA support"
+	select DMA_ENGINE
+	help
+	  Support for "Type-AXI" NBPF DMA IPs from Renesas
+
 config DMA_ENGINE
 	bool