John Wang 7c70cefcae Don't use SNR in the invalid check.
Since some RILs use -1 instead of INVALID_SNR as invalid vlue for
LTE SNR, SignalStrength will not use LTE SNR to check if LTE valid.

bug:5970403
Change-Id: Ia948e076f8f5878e081e87680076b187857879c8
2012-02-06 14:03:57 -08:00
..
2012-02-06 14:03:57 -08:00