i9300: add SamsungServiceMode

Change-Id: I774c3f90501f20fc7c1f4eaa61d80c3be7028df5
i9300: fix dock audio

Change-Id: I44b8c3ec52652ff9f57a70aacd4c5156818e0037

Conflicts:

    overlay/packages/apps/Settings/res/values/config.xml