Telephony: Ignore the timingAdvance field in SignalStrength

Ignore the timingAdvance field since the frameworks is not
utilizing this field.

Change-Id: Iba286cb0089c90f26194464426a52937feeb71b6
SignalStrength: Hotfix TD-SCDMA

Change-Id: Ifa6adf4db84b93353710698857845d9c373befb0

SignalStrength: Hotfix TD-SCDMA take 2

Change-Id: Idc1836fdaac9d712654cd0dbf37101f258e3b38b
Telephony: fix tdsdma asu invalid value

The magic value for invalid asu is "99", not "255". This error is
causing the value validity checks to fail incorrectly, fixit.

Change-Id: I514fb78971d2adc0bc0c9d9cf4ecb935ae96fef9
Merge changes I514fb789,Idc1836fd,Iba286cb0 into du44

* changes:
  Telephony: fix tdsdma asu invalid value
  SignalStrength: Hotfix TD-SCDMA
  Telephony: Ignore the timingAdvance field in SignalStrength