tegra3-common: Sync include/hardware headers

Updated audio.h required for the recent frameworks/av changes.

Change-Id: Ia1f8acb59cd5547fb9b03a4afa8b4db4f577896c
fix libstagefrighthw and other conflicts with other devices

- this includes jflte and many other devices

Change-Id: I2414571a04fe3deb1214ef97400f40bedb551efe
removes useless comments

Change-Id: I02cbd6d3233c879395067f52c2a9539ebe7c34c5
tegra3-common: Add button brightness control to Tegra3Parts

Change-Id: Ie89437dc476fcd27d2ca38495e8330357a3a7d4e
tegra3-common: Add vibration intensity control to Tegra3Parts

Change-Id: I4d99101a8ae4bfdfe2c6421edda9cc115ec4b0b9