Fix the following sparse warning:
| drivers/usb/storage/cypress_atacb.c:46:22: warning:
|	symbol 'cypress_usb_ids' was not declared. Should
|	it be static?
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
   .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
 
-struct usb_device_id cypress_usb_ids[] = {
+static struct usb_device_id cypress_usb_ids[] = {
 #      include "unusual_cypress.h"
        { }             /* Terminating entry */
 };