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>

drivers/dma/Kconfig

@@ -383,6 +383,12 @@ config DMA_SUN6I
 	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
 

drivers/dma/Makefile

@@ -47,4 +47,5 @@ obj-$(CONFIG_MOXART_DMA) += moxart-dma.o
 obj-$(CONFIG_FSL_EDMA) += fsl-edma.o
 obj-$(CONFIG_QCOM_BAM_DMA) += qcom_bam_dma.o
 obj-y += xilinx/
+obj-$(CONFIG_NBPFAXI_DMA) += nbpfaxi.o
 obj-$(CONFIG_DMA_SUN6I) += sun6i-dma.o