Set correct default network mode

We dont support NETWORK_MODE_TD_SCDMA_GSM_WCDMA_LTE (20)

Set it to NETWORK_MODE_LTE_GSM_WCDMA (9)

Change-Id: I990b074b64734a1f0546d52fef39d40670db9d27
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>