power/rk3399: Fix wrong return state when POWER_S3S0 failed
power/rk3399: Fix wrong return state when POWER_S3S0 failed

Currently we are returning POWER_S3S0 when POWER_S3S0 failed, which
would cause dead loop.

Return POWER_S0S3 instead to avoid that.

BUG=b:64886507
TEST=build and boot

Change-Id: Ia6567ee6edd399c0eb39e88006436753fa303507
Signed-off-by: Jeffy Chen <47d6898d69484cecf82b43667abe052526630c0f@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/625637
Tested-by: Douglas Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Reviewed-by: Douglas Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec