boards : Add supoport for Microchip MEC2016 EVB ASSY 6797

This was tested with a the hello world application. UART 0 was used
as console for displaying "Hello World! mec2016evb_assy6797" to the
a serial terminal.

Signed-off-by: Francisco Munoz <francisco.munoz.ruiz@intel.com>
10 files changed