TFM: Fix compile error with casting

[ccli8]

Description

This PR fixes compile error on casting void * to sfn_t implicitly in TFM code.

Pull request type

[X] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Docs update
[ ] Test update
[ ] Breaking change

[0xc0170]

@ARMmbed/mbed-os-psa This comes from external sources? Is it fixed there ?

[ciarmcom]

@ccli8, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

[orenc17]

@0xc0170
TFM source code is imported periodically, we do not accept PR changing specific code

[0xc0170]

In this case, if this is a build error, @orenc17 how to check this is fixed there and when we can fetch the update?

[orenc17]

we merged #10286 a week ago, which updated the TFM sources
if @ccli8 can provide a TFM hash that solves the issue i could try to do another import

BTW iwe should have seen an error on other TFM platforms

[ccli8]

@orenc17 To reproduce the issue of #10439, follow the steps:

1. Clone the secure build project (mbed-os version must match)
2. Apply PSA: Pass TFM_LVL macro to linker files #10438 first
3. Build with mbed compile -m NUMAKER_PFM_M2351_S -t ARMC6 --app-conf mbed_app.json, and you should see error message with TFM: Fix compile error with casting #10439.

[orenc17]

@ccli8
i would suggest adding your secure target to mbed-os like the LPC55S69_S target instead of creating a separate repo

[ccli8]

@orenc17 Secure target like NUMAKER_PFM_M2351_S has added into target.json. The separate repo is for configurable from outside.

[orenc17]

@ccli8 as i said before i cannot allow this change due to the nature of how we maintain TF-M sources in the mbed-os tree.
i could suggest creating a change request in TF-M gerrit

once that change is merged i could import it

[ccli8]

@orenc17 That's fine. Thanks.

[adbridge]

@orenc17 should this PR be closed then ?

[orenc17]

Yes

[ccli8]

Merged into TF-M repo.