Move platform related data and definition to the platform
directory and include it using:
arch/<arch>/platforms/*/Kconfig.platform
This way we will able to add a platform as a directory of
content without the need to change and Kconfig files.
Platforms can then be included by reference (using repo or
git submodules and does not need to be part of the zephyr
project)
Change-Id: I5e71f5394c22edb346f7d61d9448b8e1c68e1f9b
Signed-off-by: Anas Nashif <anas.nashif@intel.com>