Reduce warning level of object not present message

Some of the routines use this function to detect features supported by the
chip, and it may be confusing to receive the warning where the operation is
proceeding correctly.

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Set default verbose level to display errors and warnings

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Remove unnecessary debug from mxt-app