staging/rts5208/rtsx_scsi.c: Remove unnecessary parentheses

Remove unnecessary parentheses from staging/rts5208/rtsx_scsi.c

Signed-off-by: Georgiana Rodica Chelu <georgiana.chelu93@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>