USB: move usb_translate_errors to linux/usb.h

Move usb_translate_errors from usb core to linux/usb.h as it is meant to
be accessed from drivers.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 3888778..45e8479 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -132,20 +132,6 @@
 			for_devices;
 }
 
-/* translate USB error codes to codes user space understands */
-static inline int usb_translate_errors(int error_code)
-{
-	switch (error_code) {
-	case 0:
-	case -ENOMEM:
-	case -ENODEV:
-		return error_code;
-	default:
-		return -EIO;
-	}
-}
-
-
 /* for labeling diagnostics */
 extern const char *usbcore_name;
 
diff --git a/include/linux/usb.h b/include/linux/usb.h
index d3d0c13..2f05a7f 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1598,6 +1598,19 @@
 
 /* ----------------------------------------------------------------------- */
 
+/* translate USB error codes to codes user space understands */
+static inline int usb_translate_errors(int error_code)
+{
+	switch (error_code) {
+	case 0:
+	case -ENOMEM:
+	case -ENODEV:
+		return error_code;
+	default:
+		return -EIO;
+	}
+}
+
 /* Events from the usb core */
 #define USB_DEVICE_ADD		0x0001
 #define USB_DEVICE_REMOVE	0x0002