staging: rtl8723bs: fix function comments to follow kernel-doc

there are some good function comments not following
kernel-doc. Make them follow kernel-doc style

Signed-off-by: karthik alapati <mail@karthek.com>
Link: https://lore.kernel.org/r/ca8feff68a247c54b67d9c19555d1d8c1f16ebfe.1613048573.git.mail@karthek.com


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