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-build-native_1.86.0.bb

@@ -0,0 +1,26 @@
+SUMMARY = "Boost.Build"
+DESCRIPTION = "B2 makes it easy to build C++ projects, everywhere."
+HOMEPAGE = "https://github.com/boostorg/build"
+SECTION = "devel"
+
+LICENSE = "BSL-1.0"
+LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=e4224ccaecb14d942c71d31bef20d78c"
+
+SRC_URI = "git://github.com/boostorg/build;protocol=https;branch=master;tag=boost-${PV}"
+SRCREV = "4a52d8c06635435b64e31a56eaf7ca5dc912a71d"
+PE = "1"
+
+UPSTREAM_CHECK_GITTAGREGEX = "boost-(?P<pver>(\d+(\.\d+)+))"
+
+inherit native
+
+do_compile() {
+    ./bootstrap.sh
+}
+
+do_install() {
+    HOME=/var/run ./b2 install --prefix=${D}${prefix}
+}
+
+# The build is either release mode (pre-stripped) or debug (-O0).
+INSANE_SKIP:${PN} = "already-stripped"