Documentation: USB: fix example bulk-message timeout

USB bulk-message timeouts are specified in milliseconds and should
specifically not vary with CONFIG_HZ.

Use a fixed five-second timeout in the "Writing USB Device Drivers"
example.

Signed-off-by: Johan Hovold <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: jhovold

Documentation/driver-api/usb/writing_usb_driver.rst

@@ -234,7 +234,7 @@ error message. This can be shown with the following code::
 			   skel->bulk_in_endpointAddr),
 			   skel->bulk_in_buffer,
 			   skel->bulk_in_size,
-			   &count, HZ*10);
+			   &count, 5000);
     /* if the read was successful, copy the data to user space */
     if (!retval) {
 	    if (copy_to_user (buffer, skel->bulk_in_buffer, count))