usb: musb: ux500: add configuration and build options for ux500 dma

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index dbb13bd..1309348 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -153,6 +153,13 @@
 	  you can still disable it at run time using the "use_dma=n" module
 	  parameter.
 
+config USB_UX500_DMA
+	bool
+	depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
+	default USB_MUSB_UX500
+	help
+	  Enable DMA transfers on UX500 platforms.
+
 config USB_INVENTRA_DMA
 	bool
 	depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY