msm7x30: Move custom RIL from frameworks/opt/telephony

* Make it easier to maintain it
SemcQualcomm7x30RIL: Properly report SIM card missing status.

For some reason app index is still 0 even though there are no apps. Properly
report app index -1 in such cases.

Change-Id: I3cf3fef6d788d4a59ddf6e6c1b0d0d8a4247d8a9