staging: rtl8723bs: replace private CRC-32 routines with in-kernel ones

replace private CRC-32 routines with in-kernel ones.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/cdd9bc521b7119a9c2787b46109eb76f94bd295a.1620652505.git.fabioaiuto83@gmail.com


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