staging: rtl8723bs: ioctl_linux: Remove unnecessary parentheses

Fix the following checkpatch issue:
- CHECK: Unnecessary parentheses around ...

Signed-off-by: Franziska Naepelt <franziska.naepelt@googlemail.com>
Link: https://lore.kernel.org/r/20230722215850.4353-1-franziska.naepelt@googlemail.com


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