Add TrustZone support for MCXA and MCXW targets

[devin-ai-integration]

Add TrustZone support for MCXA and MCXW targets

This PR adds TrustZone (TZEN=1) support for MCXA and MCXW targets in wolfBoot:

• Added armv8m_tzen support to both HAL implementations
• Configured SAU and TrustZone controllers for secure/non-secure memory regions
• Updated flash operations to handle TrustZone-specific requirements
• Modified MCXW71 test app to mirror the behavior of the stm32h5 non-secure test-app

The implementation follows the pattern established in other TrustZone-enabled targets like rp2350 and stm32h5.

Link to Devin run: https://app.devin.ai/sessions/10490a24a61e481e90d1b89f561e8160
Requested by: daniele@wolfssl.com

[devin-ai-integration]

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