Staging: speakup: removing jiffies comparison using time_after_eq()

Fix checkpatch warning:  Comparing jiffies is almost always wrong;
prefer time_after, time_before and friends

Signed-off-by: Ashvini Varatharaj <ashvinivaratharaj@gmail.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>