dma: Add driver for ADI SC5xx-family SoC MDMA functionality

Add a rudimentary MDMA driver for the Analog Devices SC5xx SoCs,
primarily intended for use with and tested against the QSPI/OSPI
IP included in the SoC.

Co-developed-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Ian Roberts <ian.roberts@timesys.com>
Co-developed-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Vasileios Bimpikas <vasileios.bimpikas@analog.com>
Signed-off-by: Utsav Agarwal <utsav.agarwal@analog.com>
Signed-off-by: Arturs Artamonovs <arturs.artamonovs@analog.com>
Signed-off-by: Greg Malysa <malysagreg@gmail.com>
Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 48811ea..00d7658 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -13,5 +13,6 @@
 obj-$(CONFIG_TI_EDMA3) += ti-edma3.o
 obj-$(CONFIG_DMA_LPC32XX) += lpc32xx_dma.o
 obj-$(CONFIG_XILINX_DPDMA) += xilinx_dpdma.o
+obj-$(CONFIG_ADI_DMA) += adi_dma.o
 
 obj-y += ti/