init: Save away first 16 bytes of memory
init: Save away first 16 bytes of memory

Currently the null branch catcher blows away the first 16 bytes of
memory.

This patch saves this away in case we need to reinstate them later

Signed-off-by: Michael Neuling <7b0ab45a730e48a69239010b5b8fe5fa4e8eaac6@neuling.org>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

qemu/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,open-power/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot,open-power/skiboot,open-power/skiboot,open-power/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,mikey/skiboot,stewart-ibm/skiboot,shenki/skiboot,open-power/skiboot,stewart-ibm/skiboot,mikey/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot,legoater/skiboot,stewart-ibm/skiboot,mikey/skiboot