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clear kv ctrl reg with zeroize#255

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mojtaba-bisheh wants to merge 2 commits intomainfrom
zeroize_kv_ctrl_reg
Open

clear kv ctrl reg with zeroize#255
mojtaba-bisheh wants to merge 2 commits intomainfrom
zeroize_kv_ctrl_reg

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based on Caliptra chipsalliance/caliptra-rtl#1077

When a crypto operation fails, the KV write register remains uncleared. Because the failure prevents tag generation, the write FSM never activates to clear the write enable. Consequently, the next operation bypasses the KV interface, causing the data to be unexpectedly zeroed.

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