usb: hwa: add USB build dependency for USB_HWA_HCD

An HWA is a USB device so it depends on USB.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 609efe2..b943545 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -709,7 +709,7 @@
 
 config USB_HWA_HCD
 	tristate "Host Wire Adapter (HWA) driver"
-	depends on UWB
+	depends on USB && UWB
 	select USB_WUSB
 	select UWB_HWA
 	help