nilrt.conf: skip kernel version check on sdkmachines
nilrt.conf: skip kernel version check on sdkmachines

Checking for >=3.14 kernel versions on build machines would
not allow for the installation of the latest toolchain.

This fix allows for the toolchain to run on older kernel
versions for build machines, while assuring that builds
intended for ARM targets remain bounded by the oldest kernel
version check.

Signed-off-by: Jonathan David <80b9ac6512638fa5cc3d40da6e754f4c5949778b@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt