drivers: usb: Fix dependency for USB_HWA_HCD

Fix the following build warning:

warning: (USB_HWA_HCD) selects UWB_HWA which has unmet direct dependencies (UWB && USB)
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/Kconfig

@@ -559,7 +559,7 @@ config USB_WHCI_HCD
 config USB_HWA_HCD
 	tristate "Host Wire Adapter (HWA) driver (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
-	depends on USB
+	depends on USB && UWB
 	select USB_WUSB
 	select UWB_HWA
 	help