staging: rtl8192e: Remove entry .rx_check_stuc.. from struct rtl819x_ops

Remove entry .rx_check_stuck_handler and replace it with function name
rtl92e_is_rx_stuck. This increases readability of the code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/6538f1e158664837f6d1e7a20583ff20fc4f1403.1677010997.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>