CDMALTE: Evaluate data network type in pollStateDone()

During LTE to HRPD handover, CDMA data network type (1X, DO, RevA)
was not detected immediately as the checking was not done without
waiting for the LTE state. The patch will wait for pollStateDone
to determine new data network state.

Change-Id: I2d63d43df1f3124ba27f77897abef30f06be650d