[coreboot] Patch merged into coreboot/master: a17fd05 Rename generated hudson_romsig.bin for make clean

the following patch was just integrated into master:
commit a17fd056d4b4fb373f7821ccca74a80de14fc618
Author: Martin Roth 
Date:   Wed Dec 5 16:09:35 2012 -0700

Rename generated hudson_romsig.bin for make clean

The file generated when the IMC or XHCI binaries are included in the rom
    was named $(obj)/hudson_romsig.bin.  The problem with this is that it
    doesn't get deleted when the user does a make clean.
    changing the name to coreboot_hudson_romsig.bin makes this happen.

Change-Id: I19a40042fbf0f7b5633d7b35339c05ed90d3243b
    Signed-off-by: Martin Roth 
    Reviewed-on: http://review.coreboot.org/1978
    Tested-by: build bot (Jenkins)
    Reviewed-by: Zheng Bao 
    Reviewed-by: Marc Jones

Build-Tested: build bot (Jenkins) at Fri Dec  7 01:56:59 2012, giving +1
Reviewed-By: Marc Jones  at Wed Dec 12 17:42:48 2012, giving +2
See http://review.coreboot.org/1978 for details.

-gerrit