staging: rtl8723bs: ioctl_linux: Fix comparison to false

Fix the following checkpatch issue:
- CHECK: Using comparison to false is error prone

Signed-off-by: Franziska Naepelt <franziska.naepelt@googlemail.com>
Link: https://lore.kernel.org/r/20230722215927.4443-1-franziska.naepelt@googlemail.com


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