Fix ICH spi implementation which reads data from different chips.

This patch adjusts the read timeout in order to support flash chips
which needs more than 60ms to complete a spi command.

This problem can be reproduced on a Thinkpad T520 with M25PX64 spi chip ( suspend to ram bug ).

Change-Id: I22b2e59f1855ead6162a292b83b9b854b55c0235
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: http://review.coreboot.org/7105
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
lenovo/T520: Remove butterfly DSP init.

It's specific to butterfly. Doesn't do anything on lenovos.

Change-Id: I98b7c3199de5d8515bd869936e1b95847321d264
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-on: http://review.coreboot.org/7099
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)