staging: r8188eu: simplify two boolean assignments

There's no need to use the ? operator and to set true and
false explicitly.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211111212644.9011-7-martin@kaiser.cx


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