Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

1. Add initial poplar.mk, not integrated with buildroot yet.
2. Configure travis to build poplar setup
3. Add poplar as supported build platform to README.md

Reviewed-by: Victor Chong <victor.chong@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>