binder: Add readuInt64() symbol for LG RIL compatibility

 * LG RIL libs need readuInt64() (I have no idea why, blame LG)
 * Instead of having to use liblgderp.so we can just set
   NEEDS_LGE_RIL_SYMBOLS to incorporate the symbols into the system
 * Original commits:
   - http://review.cyanogenmod.org/#/c/61459/
   - http://review.cyanogenmod.org/#/c/61460/

Change-Id: I9069dbde7a5800c538b135963b4cf7365a1b3f80