mb/google/sarien: Fix SSD's power off sequence before going to S5
BUG=b:
133389422
TEST=check SSD's power off sequence to meet PCIE requirement.
SSD's reset should be cleared before clearing SSD's power EN Pin.
Change-Id: Ia106b805deafb8a442b56bcce91b51135cb32988
Signed-off-by: Roy Mingi Park <roy.mingi.park@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33182
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>