nicintel_spi: Support for I210/I211 cards

Implements I210 "raw" flash access as detailed in:
http://www.intel.com/content/www/us/en/embedded/products/networking/i210-ethernet-controller-datasheet.html

Unfortunately, most of the time the card is in Secure Mode, which means
that the raw access is not available. But his should be pretty useful
for bringing up boards.

Change-Id: I8598ab21297b85dcae1e650a168043aa4cc15c10
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Reviewed-on: https://review.coreboot.org/21430
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
1 file changed