Building with the attached random configuration file,

drivers/iio/light/tcs3472.c: In function ‘tcs3472_trigger_handler’:
drivers/iio/light/tcs3472.c:195:2: error: implicit declaration of
function ‘iio_push_to_buffers_with_timestamp’
[-Werror=implicit-function-declaration]
  iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
  ^
cc1: some warnings being treated as errors
make[3]: *** [drivers/iio/light/tcs3472.o] Error 1