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: Ief816eb577ccf371b3c85df1fe9515eb0bfb3f06
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_base into android-4.4