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[hw-model] Merge OTP values on cold reset in the subsystem hw-model#3647

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[hw-model] Merge OTP values on cold reset in the subsystem hw-model#3647
zhalvorsen wants to merge 1 commit intochipsalliance:mainfrom
zhalvorsen:push-qpxzzsltvqxr

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Use save-and-restore in cold_reset and bitwise OR loops in init_otp_with_lc_override to combine initial settings with current backing memory.

This will enable tests that burn fuses during operation. This is especially useful in MCU tests such as revoking firmware verification keys.

Use save-and-restore in cold_reset and bitwise OR loops in
`init_otp_with_lc_override` to combine initial settings with current backing
memory.

This will enable tests that burn fuses during operation. This is especially
useful in MCU tests such as revoking firmware verification keys.
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