staging: rtl8723bs: replace cap_* macros

Replace unique cap_* macros with kernel provided WLAN_CAPABILITY_*
macros.

Signed-off-by: Ross Schmidt <ross.schm.dev@gmail.com>
Link: https://lore.kernel.org/r/20201206034517.4276-3-ross.schm.dev@gmail.com


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