Custom layer for gumstix build

Includes files and recipes for the original xbox (work in progress)

See https://docs.yoctoproject.org/3.2.4/ref-manual/ref-system-requirements.html for information on base package required for your system.

repo init -u https://github.com/uglyoldbob/yocto-manifest.git -m xbox.xml