staging: rts5208: remove unnecessary parentheses in ms.c

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

Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com>
Link: https://lore.kernel.org/r/20210918065744.26304-1-benjamin.philip495@gmail.com


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