vendor/cm: fix Sprint MMS apn being set as default

Sprint CDMA MMS APN was being incorrectly set as default and hipri,
causing LTE connectivity issues because it was prioritized over the
other APN entries for LTE and EHRPD.

Change-Id: I6ca4fd172e2ecc64ca7a2c3fbca5327be61e7b5c
1 file changed