This patch is only a bulk renaming.
In order to be aligned to Yocto naming, changed the layer names:
- meta-edison-arduino -> meta-intel-arduino. This layer will be maintained by
  Arduino team and can be shared with Galileo project.
- meta-edison-middleware -> meta-intel-iot-middleware. This layer will be
  maintained by Middleware team and can be shared with IOT devkit and OTC
  reference distro.
- meta-edison -> meta-intel-edison-bsp. Layer containing the minimum code to
  boot an Edison board (kernel + u-boot).
- meta-edison-distro -> meta-intel-edison-distro. Layer containing all the
  Edison specific application.
- meta-edison-devenv -> meta-intel-edison-devenv. Local development environment
  layer.
- meta-edison-devtools -> meta-intel-edison-devtools. Layer containing internal
  development and testing tools..

Tracked-On: EDISON-2371
Signed-off-by: Simon Desfarges <simon.desfarges@intel.com>