aarch64: fix build broken by recent changes

fix build for Aarch64 broken by commit 66317807 and b3fa77d3.

Signed-off-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
loader: use early console to display OSV string

and do it early (before the loop around init_array)

Signed-off-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>