android: configs: Grab the android/configs from kernel/common

This is a squash of all changes from kernel/common android-3.4 up to
  5e35d66 android: configs: add IPV6 ROUTE INFO

Change-Id: I848f1865ec7da1dfc3338a3e9d7f944a6f00f2a6
Signed-off-by: JP Abgrall <jpa@google.com>
Merge "android: configs: Grab the android/configs from kernel/common" into cm-11.0