Correct the APN type check box

- Correct the pre checked set.
- Correct when read only apn types is set.
  Gray out the read only types, if user try to select them, make a toast
  to tell user this type is not allowed by carrier.

Fix: 326172568
Test: manual - on APN edit
Change-Id: I9c2dac5adf7c16f53d255f7ead215e45c29aa491