Modernize EC to embedded-services main

Bump the embedded-services git pin off the stale 62d4ea9 onto current
main (6d7dbbf, which carries the new default_mctp_serial constructor),
porting the shared mock to the new battery Registration model and the
new spawn_service! init-closure form.

platform-common/src/mock:
- battery.rs: rewrite to the fuel-gauge Registration model. The OEM
  owns a Mutex<GlobalRawMutex, MockFuelGauge> and drives it directly;
  the service is bs::Service::new(ArrayRegistration{..}). Replaces the
  removed Device / MockBattery / execute_event API.
- thermal.rs: wrap the sensor and fan spawn_service! args in the new
  |resources| Service::new(resources, InitParams{..}) closures.
- time_alarm.rs: switch to the positional tas::Service::new closure.
- mod.rs: update the relay-handler battery type argument.

Bump all five platform locks (dev-mec was at 5cc395f1) and add
crc / crc-catalog / embedded-mcu-hal 0.3.0 cargo-vet exemptions to the
four CI platforms (dev-mec has no supply-chain store). No per-platform
code changes: every platform consumes platform_common::mock only.

dev-qemu unifies embedded-mcu-hal on crates.io: time-alarm-service
(from embedded-services main), embassy-qemu-riscv, and dev-qemu's own
HID dep all use the crates.io 0.3.0 rather than mixing crates.io and
git sources of the identical crate, which collide on defmt's derive
symbols under LTO (surfaces only in the release build, not cargo check).

Unblocks dropping the F1.1 fork [patch] override.

Assisted-by: GitHub Copilot:claude-opus-4.8

Author: dymk

platform/dev-imxrt/Cargo.lock

@@ -43,6 +43,14 @@ criteria = "safe-to-deploy"
 version = "1.0.4"
 criteria = "safe-to-deploy"
 
+[[exemptions.crc]]
+version = "3.4.0"
+criteria = "safe-to-deploy"
+
+[[exemptions.crc-catalog]]
+version = "2.5.0"
+criteria = "safe-to-deploy"
+
 [[exemptions.darling]]
 version = "0.20.11"
 criteria = "safe-to-deploy"
@@ -87,6 +95,10 @@ criteria = "safe-to-deploy"
 version = "0.1.0@git:6524cbabcc12016f1aea4c0ffa2f1354c3f8c6d1"
 criteria = "safe-to-deploy"
 
+[[exemptions.embedded-mcu-hal]]
+version = "0.3.0"
+criteria = "safe-to-deploy"
+
 [[exemptions.embedded-sensors-hal]]
 version = "0.1.1"
 criteria = "safe-to-deploy"