usb: remove redundant dependency on USB_SUPPORT

The whole Kconfig entries of the USB subsystem are surrounded with
"if USB_SUPPORT" ... "endif", so CONFIG_USB_SUPPORT=y is surely met
when these two Kconfig options are visible.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/core/Kconfig

@@ -85,7 +85,6 @@ config USB_OTG_FSM
 
 config USB_ULPI_BUS
 	tristate "USB ULPI PHY interface support"
-	depends on USB_SUPPORT
 	help
 	  UTMI+ Low Pin Interface (ULPI) is specification for a commonly used
 	  USB 2.0 PHY interface. The ULPI specification defines a standard set

drivers/usb/dwc3/Kconfig

 config USB_DWC3
 	tristate "DesignWare USB3 DRD Core Support"
 	depends on (USB || USB_GADGET) && HAS_DMA
-	select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD
+	select USB_XHCI_PLATFORM if USB_XHCI_HCD
 	help
 	  Say Y or M here if your system has a Dual Role SuperSpeed
 	  USB controller based on the DesignWare USB3 IP Core.