Hi Stefan,

I love your patch! Yet something to improve:

[auto build test ERROR on iio/togreg]
[cannot apply to v4.20-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Stefan-Popa/staging-iio-adc-ad7606-Simplify-the-Kconfing-menu/20181216-132154
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: um-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=um 

All errors (new ones prefixed by >>):

>> ERROR: "devm_ioremap_resource" [drivers/iio/adc/ad7606_par.ko] undefined!

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