fastboot: implement Kconfig

implement Kconfig for the 'fastboot' feature set

Signed-off-by: Steve Rae <steve.rae@raedomain.com>
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index ae62476..40839d8 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -43,6 +43,11 @@
 	  USBA is the integrated high-speed USB Device controller on
 	  the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
 
+config USB_GADGET_BCM_UDC_OTG_PHY
+	bool "Broadcom UDC OTG PHY"
+	help
+	  Enable the Broadcom UDC OTG physical device interface.
+
 config USB_GADGET_DWC2_OTG
 	bool "DesignWare USB2.0 HS OTG controller (gadget mode)"
 	select USB_GADGET_DUALSPEED