staging: speakup: Clean up if tests

Put logical continuations on the next line;
remove useless parentheses;
and line up the tests.

Signed-off-by: Sreya Mittal <sreyamittal5@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>