Replacing board name configuration file
Replacing image name recipe
* Replace kernel configuration location:
  - from local.conf to thunderboard.conf
  - remove some packages from the image
* Remove local.conf.sample
  - must be place on bsp-phi-thunderboard-base
* Inclusion of Micrel KSZ8081 Phy support with 50MHz clock
* Revision of compilation parameters
  - Remove audio support
  - Add PTP support