staging: r8188eu: clean up comparsions to true

Clean up comparsions to true.

x == true -> x

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210818080854.15847-1-straube.linux@gmail.com


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