power_state: samus: Reset PD MCU on cold reset

Asserting cold_reset is insufficient to reset the state of Samus since
the PD MCU has its own reset control. Assert this extra reset control
during cold reset.

TEST=Verify `dut-control power_state:rec` puts Samus into recovery mode
with latest FW.

Change-Id: I6f6a59de0490b2b25b8b0130e87aa06dc81283de
Reviewed-on: https://chromium-review.googlesource.com/262458
Reviewed-by: Todd Broch <tbroch@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Shawn N <shawnn@chromium.org>
3 files changed