staging: speakup: Fix warning of line over 80 characters.

This patch fixes the checkpatch.pl warning:
WARNING: line over 80 characters

All line over 80 characters in driver/staging/speakup/* are fixed.

Signed-off-by: Shirish Gajera <gshirishfree@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>