windeployqt: Add module Qt5MultimediaQuick_p.

Add it as a known module such that it gets an option to
enable/disable it and the name matching works for all multimedia
modules.

Task-number: QTBUG-37576

Change-Id: Iba6a0bd32ad9676d47d20d6a3d75fdb4c1772bcf
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Andrew Knight <andrew.knight@digia.com>