- It avoids apn: portalnmms as default.
  www is the actual working one for Vi India.
  So don't have to change it to www everytime manually.

- Verified in stock ROM apn conf.

Change-Id: Icc84ad8cd22e36306dd53088f7176f3a9fd849ef
Signed-off-by: Simão Gomes Viana <devel@superboring.dev>