msm8960-common: ril: Recognize unsols 5757, 4259

* Remappings don't belong in ril_unsol_commands.h
* Complete the mapping of 5757 and provide new mapping for 4259

Change-Id: Idbe0904d50ff7bfeaebf6a2b426481727f7229d0
Merge remote-tracking branch 'cm/cm-12.0' into HEAD