This reduces the amount of boilerplate code that is present in these
Makefiles by a lot.
It also makes it possible to update the Makefile rules in future without
having to re-generate all the Makefiles.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The util_sigma_delta_spi peripheral can be used to seperate the interleaved
SPI bus and DRDY signals for a ADC from the Analog Devices SigmaDelta
family.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>