core-image-core: rename to core-image-x11

Rename to better reflects its purpose, and move under recipes-graphics.

(From OE-Core rev: 9e3b208cce1a673619d82b672c7b83e6e80215cb)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-core/images/core-image-core.bb b/meta/recipes-graphics/images/core-image-x11.bb
similarity index 100%
rename from meta/recipes-core/images/core-image-core.bb
rename to meta/recipes-graphics/images/core-image-x11.bb