mdadm : moved unused files to obsolete dir

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

diff --git a/recipes/mdadm/mdadm-1.12.0/install.patch b/recipes/obsolete/mdadm/mdadm-1.12.0/install.patch
similarity index 100%
rename from recipes/mdadm/mdadm-1.12.0/install.patch
rename to recipes/obsolete/mdadm/mdadm-1.12.0/install.patch