linux-qcom-bootimg: set LD_LIBRARY_PATH as required by dtbtool
linux-qcom-bootimg: set LD_LIBRARY_PATH as required by dtbtool

Since the last upgrade of skales recipes, it now loads libfdt.so directly (from
python using ctypes), so we need to set LD_LIBRARY_PATH so that it will find the
library in the relevant sysroot.

Signed-off-by: Nicolas Dechesne <05fca36dfcf68f7e1c9eaf62b074676ab50a133b@linaro.org>

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