Automatic update of Sony kernel configurations (Not testested)

Command used for update: cp arch/arm/configs/riogrande_<codename>_defconfig .config; yes "" | make oldconfig; mv .config tmpConfig;
scripts/kconfig/merge_config.sh -m ./tmpConfig android/configs/android-base.cfg android/configs/android-recommended.cfg; mv .config
arch/arm/configs/riogrande_<codename>_defconfig

References:
- https://source.android.com/devices/tech/kernel.html
- http://serverfault.com/questions/116299/automatically-answer-defaults-when-doing-make-oldconfig-on-a-kernel-tree