disable new rfkill feature in util-linux that requires recent kernel

[boegel]

Installation of util-linux 2.31 fails on systems with older kernel with:

sys-utils/rfkill.c:67:12: error: 'RFKILL_TYPE_FM' undeclared here (not in a function)
  { .type = RFKILL_TYPE_FM,        .name = "fm",           .desc = "FM" },
            ^~~~~~~~~~~~~~
  CC       sys-utils/setarch.o
make[2]: *** [sys-utils/rfkill-rfkill.o] Error 1

Recent kernel is required for this to work:

$ grep RFKILL_TYPE_FM  /usr/include/linux/rfkill.h
 * @RFKILL_TYPE_FM: switch is on a FM radio device.
        RFKILL_TYPE_FM,
$ rpm -q --whatprovides /usr/include/linux/rfkill.h
kernel-headers-3.10.0-693.5.2.el7.ug.x86_64

rfkill feature (disabling/enabling of wireless devices) is utterly useless in HPC context imho, so OK to disable.

cc @verdurin, @migueldiascosta

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node2404.golett.os - Linux centos linux 7.4.1708, Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz, Python 2.7.5
See https://gist.github.com/32bbc58546b58649579d7ffc5cf14bc0 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node2029.delcatty.os - Linux centos linux 7.4.1708, Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz, Python 2.7.5
See https://gist.github.com/8f951ae1b772ca437218209f2c1f6a4d for a full test report.

[boegel]

@verdurin, @migueldiascosta Please test, since both of you ran into this issue?

[verdurin]

Test report by @verdurin
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
rescomp2 - Linux centos 6.8, Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz, Python 2.7.14
See https://gist.github.com/974e7ffcc1b8737e191408a4f64dbff1 for a full test report.

[verdurin]

@boegel builds fine for me, as you can see.

[migueldiascosta]

Test report by @migueldiascosta
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
grc-cluster1 - Linux centos 6.9, Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz, Python 2.6.6
See https://gist.github.com/abc9889d26de78a3d65ceb798af09032 for a full test report.

[migueldiascosta]

@boegel same here

[boegel]

@migueldiascosta OK to merge then?

[migueldiascosta]

lgtm

[migueldiascosta]

Going in, thanks @boegel!