The dummy read was due to a bug in the host-side flashrom code. It was
sending the NULL byte from the string. The host code has been fixed, so
the dummy read should be removed.
Signed-off-by: Sean Cross <xobs@kosagi.com>
In order to improve reliability, add a binary mode for interacting
with the SPI chip. This lets us hook up flashrom.
Signed-off-by: Sean Cross <xobs@kosagi.com>