[coreboot-gerrit] Patch merged into coreboot/master: Calculate HUDSON_FWM_POSITION and display warning on mismatch

the following patch was just integrated into master:
commit d12d65fc54c31ee2635c0249a1d92c2e70bc1498
Author: Martin Roth 
Date:   Sun Jun 28 14:06:23 2015 -0600

Calculate HUDSON_FWM_POSITION and display warning on mismatch

This patch calculates the address where the chipset firmware descriptor
    should be located and compares it against the actual value from Kconfig.
    If the two don't match, it puts up a warning.

This could probably replace the config variable completely, but I wanted
    to see how other people felt before doing that.  I seem to recall that
    the value used to be calculated, so I figure that there must be a reason
    it's done this way at this point.

If we do want to keep the Kconfig setting, this patch could also be
    modified to just verify that the HUDSON_FWM_POSITION is inside the ROM
    space.

Change-Id: I94addf463e2c694a94eef218ec855103a3bb5da5
    Signed-off-by: Martin Roth 
    Reviewed-on: http://review.coreboot.org/10682
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/10682 for details.

-gerrit