In might be useful to load hwstub in an environment with the MMU active,
in which case care must be taken on the order in which things are done.
Mostly, one should not disable the MMU before moving stuff around. The code
assumes the linking address (0 currently) is identity mapped.
Change-Id: I8d54ce9e8cadcde2e08990353ca7a46803731ca7
Conditional no longer needed since ctr0.S is private to target, also setup
stack just before jumping to C code only
Change-Id: I74116239be9e87bbe53e8fa814c45f04f242f1c1
