USB: musb: add Blackfin Kconfig options and Makefile

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index cf3a662..c322024 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -297,13 +297,13 @@
 
 # musb builds in ../musb along with host support
 config USB_GADGET_MUSB_HDRC
-	boolean "Inventra HDRC USB Peripheral (TI, ...)"
+	boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
 	depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
 	select USB_GADGET_DUALSPEED
 	select USB_GADGET_SELECTED
 	help
 	  This OTG-capable silicon IP is used in dual designs including
-	  the TI DaVinci, OMAP 243x, OMAP 343x, and TUSB 6010.
+	  the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
 
 config USB_GADGET_M66592
 	boolean "Renesas M66592 USB Peripheral Controller"