bblayers.conf.sample: add meta-linaro-toolchain
bblayers.conf.sample: add meta-linaro-toolchain

The meta-rpb layer requests the use of the linaro-5% toolchain, so make the
linaro toolchain layer available.

Signed-off-by: Trevor Woerner <8835777cd84fba3d7873eabbbe1f2de2d3f25b00@gmail.com>

ndechesne/qcom-oe-setup