Enable triggered sampling support

configname: CONFIG_IIO_TRIGGER

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>Enable triggered sampling support
In linux kernel since version 2.6.32 (release Date: 2009-12-02)
Provides IIO core support for triggers. Currently these
are used to initialize capture of samples to push into
buffers. The triggers are effectively a 'capture
data now' interrupt.
depends
CONFIG_IIO

is selected by
CONFIG_IIO_SYSFS_TRIGGER

is depended by
CONFIG_AD7380