dmaengine: Add STM32 DMA driver

This patch adds support for the STM32 DMA controller.

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index e6cd1a3..3a8ce67 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -431,6 +431,18 @@
 	help
 	  Support for ST-Ericsson DMA40 controller
 
+config STM32_DMA
+	bool "STMicroelectronics STM32 DMA support"
+	depends on ARCH_STM32
+	select DMA_ENGINE
+	select DMA_OF
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Enable support for the on-chip DMA controller on STMicroelectronics
+	  STM32 MCUs.
+	  If you have a board based on such a MCU and wish to use DMA say Y or M
+	  here.
+
 config S3C24XX_DMAC
 	tristate "Samsung S3C24XX DMA support"
 	depends on ARCH_S3C24XX