soc: nxp: imxrt118x: update MPU configuration

[nxp-shelley]

fixes: #80721
Updated mpu region address to secure address.

[github-actions]

Hello @nxp-shelley, and thank you very much for your first pull request to the Zephyr project!
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[DerekSnell]

@hakehuang , can you run our tests on this board, and ensure they all pass with this PR?

@lucien-nxp , can you please review this PR?

[DerekSnell]

Thank you @nxp-shelley for resolving this.
But can you review these comments about the FlexSPI region sizes?

I did replicate the issue, and see this PR resolves it. When building the ADC test below from the main branch, nothing prints out the console. With this patch, the test passes and can be reflashed.

west build -b mimxrt1180_evk//cm33 tests/drivers/adc/adc_api/ --pristine

[hakehuang]

@hakehuang , can you run our tests on this board, and ensure they all pass with this PR?

@DerekSnell it works.

[DerekSnell]

Looks great, @nxp-shelley . Thank you for this fix!

[github-actions]

Hi @nxp-shelley!
Congratulations on getting your very first Zephyr pull request merged 🎉🥳. This is a fantastic achievement, and we're thrilled to have you as part of our community!

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