staging: rtl8723bs: Change controlling expressions

Change controlling expressions within 'if' statements: don't compare
with 'true'.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210411110458.15955-5-fmdefrancesco@gmail.com


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