* This is based on how it was done in cm-14.1, but redone
because the old code completely ignored signedness
* Samsung, in their stock RIL.java, reads index as an int,
sets the first 8 bits to index, the next 8 bits to call_id,
and ignores the upper 16 bytes of the int parcelled up
* This emulates that behavior here, except it only sends the
first 8 bits so that AOSP's RIL.java doesn't get confused
Change-Id: I5c78447fdef7d5fd7fc39addb970300ee1188cd1
71900d444e