HTCQualcommRIL: handle more unsolicited states

The following commits added, changed, then removed, handling of
several unsolicited responses that are needed by some s4 devices:

CyanogenMod@6cbccb7ef071f78b031daf5d74d5cb5cf314ad30
CyanogenMod@492c36536d259d55ea947a03ff22ad05ae6f51b2
CyanogenMod@a8dd7a045649b15d95b3afde47ba5c8ebe28d2de

Patch set 2 includes support for a new unsolicited state:
3020: RIL_UNSOL_CDMA_NETWORK_BASE_PLUSCODE_DIAL

Depends on: http://review.cyanogenmod.org/44363

Change-Id: Ifadd7c736d02b3db8cd1d9105619920c1bfd77cc