staging: rtl8723bs: convert IsSupportedHT to snake_case

convert IsSupportedHT to snake case is_supported_ht.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/d3e115f3a553db07a52cc51b71d04de9c383f697.1626533647.git.fabioaiuto83@gmail.com


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