staging: rts5208: remove unnecessary parentheses in rtsx_card.c

This commit removes unnecessary parentheses that have been flagged
by checkpatch.pl in rtsx_card.c.

Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com>
Link: https://lore.kernel.org/r/41db2310fdd942a8d840e21572f1fe21879798e2.1632209460.git.benjamin.philip495@gmail.com


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