nb/intel/sandybridge/raminit: add additional fallbacks

Add the following fallbacks:
* Try decreasing clock frequency.
   In case of DDR1600 the next possible value of DDR1333 is being used.
* Try decreasing clock frequency.
   In case of DDR1333 the next possible value of DDR1066 is being used.
* Disable failing channel.
   The system may be able to boot with a single channel enabled.

The fallbacks are untested.

Change-Id: I3be7034ad25312b3ebf47a54f335a3893f8d7cc1
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/14173
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

0 files changed, 0 insertions, 0 deletions