STAGING/SPEAKUP: Fix "expression using sizeof bool" warnings

Fix "warning: expression using sizeof bool" messages caught by sparse.
Resending directly to SPEAKUP maintainers.

Signed-off-by: Jeff Becker <Jeffrey.C.Becker@nasa.gov>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>