QNX: Fix capitilization of QnxPlugin

Change-Id: I583cee500acc78ee2eb6075b0f951def0bd87d22
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: Mehdi Fekari <mfekari@blackberry.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>