support SPI bus connection

modulename: adt7316-spi.ko

configname: CONFIG_ADT7316_SPI

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>IIO staging drivers
└─>Analog digital bi-direction converters
└─>SPI support
└─>support SPI bus connection
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Say yes here to build SPI bus support for Analog Devices ADT7316/7/8
and ADT7516/7/9.

To compile this driver as a module, choose M here: the module will
be called adt7316_spi.

source code: