Elan Touch Screen Driver for Dell Chromebook 13, Acer R11, etc.
Tested on Acer R11 Chromebook (cyan) Works with up to 10 touches.
Huge thanks to the vmulti and DragonFlyBSD projects, which I used for references. Also, thanks to Microsoft for open sourcing the Synaptics RMI I2C driver, which I also used as a reference.