qcom-common: enable hardware aac encoder and hardware hwui shader stuff

Change-Id: I52044aaaea7b1d6daed93cc75ba59fa63ae6f6a0
qcom-common: show LTE icon instead of 4G

  * This is to mimic the behavior of the Google Play Edition phones.

Change-Id: I91847194b7e98be6ffac5fbbb3ce4706cfeb8ccc
qcom-common: Disable fancy HWUI tweaks

 * Causes problems in Chrome and other apps.

Change-Id: I2d01a221256dab621d864eac3b30de2ffec4584c