i9300: loop ringtones, cleanup unused props

Change-Id: Id0e556e865f8d6858288365763b40a46bd8d95a1
Revert "i9300: audio: increase mic gain"

This reverts commit f503df029b1023ec5f820c8b51be0519057978c2.

Change-Id: I7b31a55757019fe190b67009a1806eeb70ee63a7
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_device_samsung_i9300 into cm-10.1