initramfs-test-image: enable lrzsz
initramfs-test-image: enable lrzsz

Add lrzsz tool to be able to transfer files through the serial line.
The package uses 138 kiB of space.

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

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