camera: Enable ZSL

Restarting preview if toggling ZSL fixes the stream errors on
switch, so we can enable this now

Change-Id: I07ceeed859ffa6dc4e75faed18209be83c21a043
Enable use of two stop bits for Bluetooth

This improves reliability on chips such as BCM4335.

Signed-off-by: dr87 <nb00870@gmail.com>
Bluetooth: Adjust Baud Rate

Every other device config running BCM4335 B uses a baud rate of 3000000, so update this.

Signed-off-by: dr87 <nb00870@gmail.com>
Fix BCM4335 chip crashes caused by BT/WiFI concurrency

 * The stock B+ driver works around chip crash that occurs when WiFi is
   on and BT is enabled/disabled by sending a magic patch to the
   hardware.
 * This patch was not in an external file, so some reverse engineering
   was required to extract it and put it in the correct format.
 * Enable the prepatch and enjoy crash-free Bluetooth :)

Commit by Cyanogenmod to fix BT Wifi lockups on BCM4335 chips, which the G2 has also experienced on the 4.4.2 kernel. Implement this to G2 (Tested and working)

Signed-off-by: dr87 <nb00870@gmail.com>