[coreboot] Patch merged into coreboot/master: a529a47 Don't loop infinitely long on serial comm failures

the following patch was just integrated into master:
commit a529a4718a63f7e0853b4c9dd32ec1c77cc7bb2c
Author: Stefan Reinauer 
Date:   Fri Mar 30 16:19:31 2012 -0700

Don't loop infinitely long on serial comm failures

If serial uart (8250/16x50) takes abnormally long to respond, give
    up on logging to serial console and instead let the system boot.

Also reference bit in LSR register with correct name.

Signed-off-by: Kyösti Mälkki

Ported from 9dd3ef165a1bf1bc404056d3e54337de1a15ac90 to
    uart8250mem.c:
    Signed-off-by: Stefan Reinauer

Change-Id: Iaca4f57389c887110e6406d45053935891c96838

Build-Tested: build bot (Jenkins) at Fri Apr  6 03:01:53 2012, giving +1
Reviewed-By: Peter Stuge  at Sat Apr  7 03:22:39 2012, giving +1
See http://review.coreboot.org/826 for details.

-gerrit