Initialize SPM (System Power Management) in RAM stage.
This adds 55ms to the boot time.
TEST=program counter of SPM is correct value(0x250) after booting up
BUG=b:202871018
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I822417f7a679107760b202dd43fb79d1934940bd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59342
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>