USB: PLAT_ORION fulfils USB_ARCH_HAS_EHCI

The various Orion SoCs, i.e. orion5x, kirkwood, dove, mv78xx0
and 370/XP have EHCI. Make sure USB_ARCH_HAS_EHCI reflects this.
Reported-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Acked-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/Kconfig

@@ -48,6 +48,7 @@ config USB_ARCH_HAS_EHCI
 	default y if SPARC_LEON
 	default y if ARCH_MMP
 	default y if MACH_LOONGSON1
+	default y if PLAT_ORION
 	default PCI
 
 # some non-PCI HCDs implement xHCI