dev-qemu: Move to merged TimeAlarm wake API #54

Parent

Follow-up to OpenDevicePartnership/embedded-services#979, implemented by OpenDevicePartnership/embedded-services#968.

What to build

platform/dev-qemu still builds against the pre-merge #968 commit baf1a15, which is not on embedded-services main. Move it to the merged commit and its final TimeAlarmService API.

Acceptance criteria

• platform/dev-qemu/Cargo.lock pins embedded-services 3ff41f5 (#968 merge) or later; no other platform lockfile changes.
• dev-qemu selects the power source through TimeAlarmService::set_power_source and drives GPIO1 from a wake_requested_receiver().
• Default, time-alarm-wake, and time-alarm-power-input builds pass Clippy, fmt, and cargo vet.
• odp-platform-qemu-arm-virt retention (AC/DC connected/disconnected), source-switch (AC/DC), and relay runs pass with this EC.