Add FlashIAP to NUCLEO_L4R5ZI

[JanneKiiskila]

Description

It is supported and we need it.

@jeromecoutant has run the tests.

| target                | platform_name   | test suite                                               | result | elapsed_time (sec) | copy_method |
|-----------------------|-----------------|----------------------------------------------------------|--------|--------------------|-------------|
| NUCLEO_L4R5ZI_P-ARMC6 | NUCLEO_L4R5ZI_P | features-storage-tests-blockdevice-flashsim_block_device | OK     | 14.23              | default     |
| NUCLEO_L4R5ZI_P-ARMC6 | NUCLEO_L4R5ZI_P | tests-mbed_drivers-flashiap                              | OK     | 16.78              | default     |
| NUCLEO_L4R5ZI_P-ARMC6 | NUCLEO_L4R5ZI_P | tests-mbed_hal-flash                                     | OK     | 16.16              | default     |
| NUCLEO_L4R5ZI_P-ARMC6 | NUCLEO_L4R5ZI_P | features-device_key-tests-device_key-functionality          | OK     | 31.49              | default     |
| NUCLEO_L4R5ZI_P-ARMC6 | NUCLEO_L4R5ZI_P | features-storage-tests-kvstore-direct_access_devicekey_test | OK     | 16.06              | default     |

Client has been enabled too and it works.

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)

Test results

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

Reviewers

@ARMmbed/team-st-mcd @jeromecoutant

Release Notes

Summary of changes

Add FlashIAP component to NUCLEO_L4RZI.

Impact of changes

Migration actions required

[ciarmcom]

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

[0xc0170]

CI started

[mbed-ci]

Test run: FAILED

Summary: 1 of 4 test jobs failed
Build number : 1
Build artifacts

Failed test jobs:

• jenkins-ci/mbed-os-ci_build-ARM

[0xc0170]

CI restarted

[mbed-ci]

Test run: SUCCESS

Summary: 11 of 11 test jobs passed
Build number : 2
Build artifacts