Update sample espi driver test to exercise some SAF functionality
based on the limited hardware available. Note the SAF test will
erase a section of the flash. SAF tests are enabled for the EVB only.
Signed-off-by: Scott Worley <scott.worley@microchip.com>
Show eSPI API driver usage, including early configuration,
send of virtual wire packets and callback mechanism
Signed-off-by: Jose Alberto Meza <jose.a.meza.arellano@intel.com>