USB STM32: fix header inclusion, removing mbed.h

[0xc0170]

Summary of changes

Fixes #13667 issue. I tested locally a built with disco iot board (but with CMake not to have extra code in), did not have compilation errors.

Impact of changes

Migration actions required

Documentation

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Pull request type

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

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Test results

[x] No Tests required for this change (E.g docs only update)
[] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

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Reviewers

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[ciarmcom]

@0xc0170, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

[0xc0170]

@adbridge Please review. I'll start CI meanwhile

[mbed-ci]

Jenkins CI Test : ❌ FAILED

Build Number: 1 | 🔒 Jenkins CI Job | 🌐 Logs & Artifacts

CLICK for Detailed Summary

jobs	Status
jenkins-ci/mbed-os-ci_unittests	✔️
jenkins-ci/mbed-os-ci_build-GCC_ARM	❌
jenkins-ci/mbed-os-ci_build-ARM	✔️

[0xc0170]

Failures are related, I'll review and I'll fix

Pull request has been modified.

[0xc0170]

Updated, I've missed one C library header file. restarting CI

[mbed-ci]

Jenkins CI Test : ✔️ SUCCESS

Build Number: 2 | 🔒 Jenkins CI Job | 🌐 Logs & Artifacts

CLICK for Detailed Summary

jobs	Status
jenkins-ci/mbed-os-ci_unittests	✔️
jenkins-ci/mbed-os-ci_build-ARM	✔️
jenkins-ci/mbed-os-ci_build-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_dynamic-memory-usage	✔️
jenkins-ci/mbed-os-ci_greentea-test	✔️
jenkins-ci/mbed-os-ci_cloud-client-pytest	✔️

[jeromecoutant]

and since is now not using mbed namespace, it needs to be added into line 181 of USBPhyHw.h like:

@0xc0170
Did you check this ?

[0xc0170]

@jeromecoutant Not yet, I can fix it now

[0xc0170]

@Allmoz feel free to send a pull request if you find a bug like this.

I'll fix it now as proposed