configs: migrate CONFIG_SPL_LOAD_FIT_ADDRESS to defconfigs

Done with:
./tools/moveconfig.py -S SPL_LOAD_FIT_ADDRESS
./tools/moveconfig.py -S SPL_LOAD_FIT_ADDRESS -H

Signed-off-by: Peng Fan <peng.fan@nxp.com>
[trini: A few more migrations]
Signed-off-by: Tom Rini <trini@konsulko.com>