USB: ehci-fsl: Fix sparse warnings

This patch fixes following warnings:

ehci-fsl.c:43:5: warning: symbol 'usb_hcd_fsl_probe' was not declared. Should it be static?
ehci-fsl.c:150:6: warning: symbol 'usb_hcd_fsl_remove' was not declared. Should it be static?
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/ehci-fsl.c

@@ -40,7 +40,7 @@
  * Allocates basic resources for this USB host controller.
  *
  */
-int usb_hcd_fsl_probe(const struct hc_driver *driver,
+static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 			     struct platform_device *pdev)
 {
 	struct fsl_usb2_platform_data *pdata;
@@ -147,7 +147,8 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver,
  * Reverses the effect of usb_hcd_fsl_probe().
  *
  */
-void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
+			       struct platform_device *pdev)
 {
 	usb_remove_hcd(hcd);
 	iounmap(hcd->regs);