am 2e081b3f: IMS: modify sendDtmf to pass char input since vendor ril will...
am 2e081b3f: IMS: modify sendDtmf to pass char input since vendor ril will translate the char input to int.
* commit '2e081b3f':
IMS: modify sendDtmf to pass char input since vendor ril will translate the char input to int.