The charter may confer voting and other stockholder rights upon the holders of any obligations of the corporation. If the charter so provides, such obligations and their holders shall be deemed stock and stockholders, respectively, for the purpose of any provision of this chapter which requires the vote of stockholders, and the charter may divest the holders of capital stock, in whole or in part, of their right to vote on any corporate matter whatsoever, except as set forth in §242(b)(2).