Create SoC include files

OE/Yocto offers the possibility to group some SoC features into a
SOC_FAMILY. This gives the possibility to group common overrides and
definitions and in a file to be included by all machines based on the
same SoC.

Signed-off-by: David Vincent <freesilicon@gmail.com>
Use correct FPU

OE/Yocto default configuration is not compatible with Atmel SAMA5D3x
FPU. Indeed, OE/Yocto uses a VFPv3 FPU whereas SAMA5D3x is a VFPv4-D16.

Signed-off-by: David Vincent <freesilicon@gmail.com>
Include file for SAM9xEK

Some options are shared by all SAM9x Evaluation Kits, so we define an
include file to be used by each machine file.

Signed-off-by: David Vincent <freesilicon@gmail.com>
Use SAM9X SoC include files

Now that we have SoC files for SAM9x MPU family, use it for every
Atmel board defined in this layer.

Signed-off-by: David Vincent <freesilicon@gmail.com>
Include file for SAMA5D3xEK

Some options are shared by all SAMA5D3x Evaluation Kits, so we define
an include file to be used by each machine file.

Signed-off-by: David Vincent <freesilicon@gmail.com>
Use SAMA5D3x SoC include files

Now that we have SoC files for SAMA5D3x MPU family, use it for every
Atmel board defined in this layer.

Signed-off-by: David Vincent <freesilicon@gmail.com>