sandbox: Set up global_data earlier
It is possible for U-Boot functions such as printf() to be called
within state_init(). This can end up checking gd->flags (e.g. in putc())
before global_data is set up.
Move the setup earlier to avoid this. This fixes the suppression of some
debug output in memory allocation (when enabled).
Signed-off-by: Simon Glass <sjg@chromium.org>
authored by