[PATCH -next] usb: cdns3: fix warning when USB_CDNS_HOST is not set

[Randy Dunlap]

Fix a build warning when USB_CDNS_HOST is not enabled:

In file included from ../drivers/usb/cdns3/core.c:23:0:
../drivers/usb/cdns3/host-export.h:27:51: warning: ‘struct usb_hcd’ declared inside parameter list will not be visible outside of this definition or declaration
 static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
                                                   ^~~~~~~

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Peter Chen <peter.chen@xxxxxxx>
Cc: Pawel Laszczak <pawell@xxxxxxxxxxx>
Cc: Roger Quadros <rogerq@xxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/cdns3/host-export.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20201208.orig/drivers/usb/cdns3/host-export.h
+++ linux-next-20201208/drivers/usb/cdns3/host-export.h
@@ -9,10 +9,10 @@
 #ifndef __LINUX_CDNS3_HOST_EXPORT
 #define __LINUX_CDNS3_HOST_EXPORT
 
-#if IS_ENABLED(CONFIG_USB_CDNS_HOST)
-
 struct usb_hcd;
 
+#if IS_ENABLED(CONFIG_USB_CDNS_HOST)
+
 int cdns_host_init(struct cdns *cdns);
 int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);