Update the README to align with TF-M v1.5.0 in TF-M integration#469

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AniruddhaKanhere merged 1 commit intoFreeRTOS:mainfrom

xinyu-tfm:main

Mar 6, 2022

Commits on Mar 4, 2022

Update the README to align with TF-M v1.5.0 in TF-M integration
xinyu-tfm
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