frameworks telephony - add DCHSPAP value

Change-Id: Ic68579da84f25be0a824d7632ce9632b9ae66944

Depends on: http://review.cyanogenmod.org/#/c/35439/
RIL: Correct the RIL_REQUEST_DIAL api missmatch

The uusPresent is written twice in dial() so it will always be
marked as absent.

Change-Id: Id50a4dc8a3eefdaf2284e410382428c52e9b5ef1