USB: xhci: make xhci_get_endpoint_address static

This is only called in the xhci.c file, so make the symbol static.

Cc: Mathias Nyman <mathias.nyman@intel.com>
Link: https://lore.kernel.org/r/20220901134744.2039891-1-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci.c

@@ -1482,7 +1482,7 @@ EXPORT_SYMBOL_GPL(xhci_get_endpoint_index);
 /* The reverse operation to xhci_get_endpoint_index. Calculate the USB endpoint
  * address from the XHCI endpoint index.
  */
-unsigned int xhci_get_endpoint_address(unsigned int ep_index)
+static unsigned int xhci_get_endpoint_address(unsigned int ep_index)
 {
 	unsigned int number = DIV_ROUND_UP(ep_index, 2);
 	unsigned int direction = ep_index % 2 ? USB_DIR_OUT : USB_DIR_IN;

drivers/usb/host/xhci.h

@@ -2042,7 +2042,6 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
 		struct usb_device *udev);
 unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc);
-unsigned int xhci_get_endpoint_address(unsigned int ep_index);
 unsigned int xhci_last_valid_endpoint(u32 added_ctxs);
 void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep);
 void xhci_update_tt_active_eps(struct xhci_hcd *xhci,