staging: rtl8192e: Rename sCrcLng

Rename constant sCrcLng to S_CRC_LEN to avoid CamelCase which is not
accepted by checkpatch. Use S_CRC_LEN instead of fix value with comment
to improve readability.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b0139a958123881fd04b60110a6889f726d943cc.1675003608.git.philipp.g.hortmann@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>