local.conf: update to new bitbake override syntax
local.conf: update to new bitbake override syntax

Signed-off-by: Nicolas Dechesne <05fca36dfcf68f7e1c9eaf62b074676ab50a133b@linaro.org>
Change-Id: Ie84955d9ea6f9ac72ac27fbd32a8f2f4f9f6ae8d

ndechesne/qcom-oe-manifest