Support preferred data profile correctly

Correctly support read/write preferred data profile.

Fix: 212906152
Test: manual & atest DataNetworkControllerTest DataProfileManagerTest
Merged-In: I3cb18680ec6c77a4905901a2aa3cf3c86ce801f1
Change-Id: I3cb18680ec6c77a4905901a2aa3cf3c86ce801f1
1 file changed