Revert "Fix build: Revert "am 9349bd96: am 7d604d74: am ccb1ae5a: Merge "When...

Revert "Fix build: Revert "am 9349bd96: am 7d604d74: am ccb1ae5a: Merge "When Data RAT changes the new RAT retry connectable APN\'s"""

This reverts commit a82185cc.

The original commit used EVENT_DATA_RAT_CHANGED but it was defined
in frameworks/base/telephony/*/DctConstants.java by this AOSP
change:

  fb61bfa4470332a7ccfca7a2df5e13baca49d9fa

And I'd forgetten to submit it. Now that EVENT_DATA_RAT_CHANGED
is defined I am reverting the revert.

Change-Id: Ied6665136cb6c36053c8fe03eee5e9f87b637f38