CONFIG_BMP280_SPI (not configurable)

modulename: bmp280-spi.ko

configname: CONFIG_BMP280_SPI

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>Pressure sensors
└─>BMP280_SPI
In linux kernel since version 4.1 (release Date: 2015-06-21)  
source code:
drivers/iio/pressure/bmp280-spi.c
selects
CONFIG_REGMAP


is depended by
CONFIG_BMP280