Comment 19 for bug 1713434

This test case was working till 2.10.0 and got broken in 2.10.1

I checked with 2.9.1, 2.10.0-rc2, 2.10.0-rc3, 2.10.0-rc4, 2.10.0

Working scenario:
# ./sparc64-softmmu/qemu-system-sparc64 -nographic -M sun4u -prom-env 'use-nvramrc?=true' -prom-env 'nvramrc=." Hello World!" cr'
OpenBIOS for Sparc64
Configuration device id QEMU version 1 machine id 0
kernel cmdline
CPUs: 1 x SUNW,UltraSPARC-IIi
UUID: 00000000-0000-0000-0000-000000000000
Hello World!
Welcome to OpenBIOS v1.1 built on Jul 13 2017 18:27
  Type 'help' for detailed information
Trying disk:a...
No valid state has been set by load or init-program

0 > QEMU 2.10.0 monitor - type 'help' for more information
(qemu) quit