sf: stmicro: add support N25Q128 parts
Adds support for Numonyx's N25Q128 SPI flash. These devices
are used on (among others) Avnet Spartan-6 LX9 micro-evaluation
boards. Tested with "sf" commands and CONFIG_ENV_IS_IN_SPI_FLASH.
Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>