Adds a programmer parameter 'spispeed' to the dediprog driver to
control the transfer rate on the spi bus. The following rates are
available (in Hz):
  375k, 750k, 1.5M, 2.18M, 3M, 8M, 12M and 24M

The original driver reinitializes the programmer after setting the
speed, so the initialization calls have moved into a new function
dediprog_setup() which is called twice.

Signed-off-by: Nico Huber <nico.huber@secunet.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>


git-svn-id: svn://coreboot.org/flashrom/trunk@1649 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1