distro/yocto: add meta-salmanoff Yocto layer for QEMU x86 images

Vendor the BitBake layer (recipes, network config, boost pin, kernel
append, runqemu bridge script) alongside SMO for packaging as a Yocto image.

Co-authored-by: Cursor <cursoragent@cursor.com>

distro/yocto/meta-salmanoff/recipes-support/boost/boost-1.86.0.inc

@@ -0,0 +1,20 @@
+# The Boost web site provides free peer-reviewed portable
+# C++ source libraries. The emphasis is on libraries which
+# work well with the C++ Standard Library. The libraries are
+# intended to be widely useful, and are in regular use by
+# thousands of programmers across a broad spectrum of applications.
+HOMEPAGE = "http://www.boost.org/"
+LICENSE = "BSL-1.0 & MIT & Python-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE_1_0.txt;md5=e4224ccaecb14d942c71d31bef20d78c"
+
+BOOST_VER = "${@"_".join(d.getVar("PV").split("."))}"
+BOOST_MAJ = "${@"_".join(d.getVar("PV").split(".")[0:2])}"
+BOOST_P = "boost_${BOOST_VER}"
+
+SRC_URI = "https://archives.boost.io/release/${PV}/source/${BOOST_P}.tar.bz2"
+SRC_URI[sha256sum] = "1bed88e40401b2cb7a1f76d4bab499e352fa4d0c5f31c0dbae64e24d34d7513b"
+
+UPSTREAM_CHECK_URI = "http://www.boost.org/users/download/"
+UPSTREAM_CHECK_REGEX = "release/(?P<pver>.*)/source/"
+
+S = "${UNPACKDIR}/${BOOST_P}"