platform/chrome: Update ChromeOS EC header for UCSI

platform/chrome: Update ChromeOS EC header for UCSI

Add EC host commands for reading and writing UCSI structures
in the EC. The corresponding kernel driver is cros-ec-ucsi.

Also update PD events supported by the EC.

Acked-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Pavan Holla <pholla@chromium.org>
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Link: https://lore.kernel.org/r/20241231131047.1757434-2-ukaszb@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>