[coreboot] Patch merged into coreboot/master: 1a43309 bump SeaBIOS to 1.7.2.1

the following patch was just integrated into master:
commit 1a43309bf7222fc25e8583d128c9685ec251dd76
Author: Idwer Vollering 
Date:   Sat Mar 2 18:27:05 2013 +0100

bump SeaBIOS to 1.7.2.1

Update coreboot to use SeaBIOS' tag rel-1.7.2.1

Change-Id: I01969407964a7cf64f7c4800b59c6aed845b24f9
    Signed-off-by: Idwer Vollering 
    Reviewed-on: http://review.coreboot.org/2575
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

Reviewed-By: Patrick Georgi  at Mon Mar  4 11:00:17 2013, giving +2
See http://review.coreboot.org/2575 for details.

-gerrit