libstb: export CVC/securerom code memory range
libstb: export CVC/securerom code memory range

This is useful to capture a real in-memory image for use in a simulator
(such as Mambo) without having to go through the complexity of setting
up the in-memory image yourself.

Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.ibm.com>
[oliver: s/CVC/cvc/]
Signed-off-by: Oliver O'Halloran <3dfaff8fa6ae977f042064a112a6aac576279b9b@gmail.com>

shenki/skiboot,shenki/skiboot,open-power/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot,legoater/skiboot,open-power/skiboot,qemu/skiboot,shenki/skiboot,shenki/skiboot,legoater/skiboot,open-power/skiboot,qemu/skiboot,open-power/skiboot,legoater/skiboot,legoater/skiboot,qemu/skiboot,legoater/skiboot,shenki/skiboot