i9300-audio: Code formatting

Change-Id: I4b1c76173a986424e26527c9fff4b486d106d981
[2/2] i9300: overlay cleanup

smdk4412-common: https://gerrit.omnirom.org/#/c/2748

Change-Id: I5dcea931c12a4e6df68496e59c38021190d0c16a