poco-vendor.inc: Correct LICENSE
poco-vendor.inc: Correct LICENSE

superflore maps "Boost Software License 1.0" to "Boost-1.0", which is
what Gentoo expects, but OE expects the SPDX standard name: "BSL-1.0".

bmwcarit/meta-ros,bmwcarit/meta-ros,bmwcarit/meta-ros,bmwcarit/meta-ros