sys/psa_crypto: Fix macro for public key max size and SE example [backport 2023.10]

[MrKevinWeiss]

Backport of #19995

Contribution description

1. Wrong public key size when using secure elements, introduced by #19954

Fixed conditions for key size macros in crypto_sizes.h.

2. EdDSA and ECDSA examples fail when using a secure element because of unsopported changes introduced by #19954

Updated example/psa_crypto to use only supported functions for secure elements.

Testing procedure

Build example/psa_crypto for secure elements and run application

Output on master:

2023-10-19 14:33:24,372 # main(): This is RIOT! (Version: 2019.07-devel-22378-gb6772)
2023-10-19 14:33:24,372 # HMAC SHA256 took 56393 us
2023-10-19 14:33:24,372 # Cipher AES 128 took 68826 us
2023-10-19 14:33:24,372 # *** RIOT kernel panic:
2023-10-19 14:33:24,373 # HARD FAULT HANDLER
2023-10-19 14:33:24,373 # 
2023-10-19 14:33:24,373 # *** rebooting...

Output with fixes:

2023-10-19 13:35:24,715 # main(): This is RIOT! (Version: 2019.07-devel-22384-g8ef66-dev/psa-crypto-fixes)
2023-10-19 13:35:24,715 # HMAC SHA256 took 56374 us
2023-10-19 13:35:24,715 # Cipher AES 128 took 68805 us
2023-10-19 13:35:24,715 # ECDSA took 281164 us
2023-10-19 13:35:24,715 # All Done

[riot-ci]

Murdock results

✔️ PASSED

4f36d87 examples/psa_crypto: Update example to work with SEs

Success	Failures	Total	Runtime
7937	0	7937	16m:34s

Artifacts

• Documentation preview

[benpicco]

bors merge

[bors]

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• Murdock
• static-tests
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