initramfs-test-image: add several small utils
initramfs-test-image: add several small utils

Enable several small utils to test i2c, sensors, cpufreq, to schedule
tasks to specific core and to get CPU features. This causes compressed
image growth of 254 KiB.

Signed-off-by: Dmitry Baryshkov <2dcd7ecf02101ef1dca344c0511f3ffb180907c2@linaro.org>

ndechesne/meta-qcom,ndechesne/meta-qcom,ndechesne/meta-qcom