dmaengine: dw: select DW_DMAC_BIG_ENDIAN_IO automagically

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/dw/Kconfig b/drivers/dma/dw/Kconfig
index db2b41f..dde1324 100644
--- a/drivers/dma/dw/Kconfig
+++ b/drivers/dma/dw/Kconfig
@@ -10,6 +10,7 @@
 config DW_DMAC
 	tristate "Synopsys DesignWare AHB DMA platform driver"
 	select DW_DMAC_CORE
+	select DW_DMAC_BIG_ENDIAN_IO if AVR32
 	default y if CPU_AT32AP7000
 	help
 	  Support the Synopsys DesignWare AHB DMA controller. This
@@ -25,12 +26,4 @@
 	  Intel Medfield has integrated this GPDMA controller.
 
 config DW_DMAC_BIG_ENDIAN_IO
-	bool "Use big endian I/O register access"
-	default y if AVR32
-	depends on DW_DMAC_CORE
-	help
-	  Say yes here to use big endian I/O access when reading and writing
-	  to the DMA controller registers. This is needed on some platforms,
-	  like the Atmel AVR32 architecture.
-
-	  If unsure, use the default setting.
+	bool