Event generation support

configname: CONFIG_IIO_SIMPLE_DUMMY_EVENTS

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>IIO dummy driver
└─>Event generation support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Add some dummy events to the simple dummy driver.

The purpose of this is to generate 'fake' event interrupts thus
allowing that driver's code to be as close as possible to that
a normal driver talking to hardware.