added sam4s16b, sam4s8c, sam4s8b, sam4s4c, sam4s4b,
sam4s4a, sam4s2c, sam4s2b and sam4s2a.
Used the same order as in the data sheet and code structure
equal to same70. Updated the sam4s_xplained board to match
the altered .dtsi location of the specific SoC.
Signed-off-by: Vincent van der Locht <vincent@vlotech.nl>
Move the SoC outside of the architecture tree and put them at the same
level as boards and architectures allowing both SoCs and boards to be
maintained outside the tree.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>