Record subsystem mode in ROM DeviceStatus measurement

[v-focutter]

Summery:

• Added the subsystem to the device status
• Added Tests for both states of the new flag

Task 3916

[Copilot]

Pull request overview

This PR extends the ROM DeviceStatus PCR log measurement to include the current subsystem/passive mode, and keeps the FMC Alias vendor device-info hash and integration tests aligned with the updated measured contents.

Changes:

• Extend the ROM DeviceStatus measured data with subsystem_mode_en (as a u8).
• Update PcrLogEntry::measured_data() sizing for DeviceStatus from 17 to 18 bytes.
• Update FMC Alias vendor device-info hash inputs and ROM integration tests to validate the new field (including both passive and subsystem-mode cases).

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
rom/dev/tests/rom_integration_tests/test_fmcalias_derivation.rs	Updates expected DeviceStatus bytes and adds explicit tests for passive vs subsystem mode.
rom/dev/src/pcr.rs	Adds subsystem mode byte to the ROM DeviceStatus PCR extension payload.
drivers/src/pcr_log.rs	Updates DeviceStatus measured-data length to 18 bytes.
common/src/dice.rs	Includes subsystem mode in the FMC Alias vendor device-info hash inputs.
FROZEN_IMAGES.sha384sum	Updates frozen ROM image hashes to reflect the ROM measurement change.

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[mhatrevi]

@v-focutter Please investigate the CI failure.