crypto/openssl_mbedtls_wrapper: Fix compat with Mbed TLS 3.6.2

[ThePassionate]

crypto/openssl_mbedtls_wrapper: Fix compat with Mbed TLS 3.6.2

Summary

This updates the openssl_mbedtls_wrapper to fix compilation errors and logic issues when building against Mbed TLS 3.6.2.

Details

Mbed TLS 3.x introduced breaking changes, including hiding struct members and refactoring state machine enums. This patch adjusts the wrapper to accommodate these changes.

Changes

1. Allow Private Access:

   • Added -DMBEDTLS_ALLOW_PRIVATE_ACCESS to Makefile. The wrapper relies on direct struct access which is now private in Mbed TLS 3.x.

2. Update State Machine Mappings (ssl_pm.c):

   • Removed the obsolete MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET enum usage in ssl_pm_get_state().

3. Fix Error Codes & Versioning:

   • Replaced removed MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE with MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE.
   • Updated ssl_pm_new to use correct version macros compatible with Mbed TLS 3.x.

Testing

• Verified compilation validation with Mbed TLS 3.6.2.

[cederom]

Thank you @ThePassionate can you please provide runtime test logs uwing different ssl versions?

Mixed case identifiers problem reported by CI comes from underlying library.

Where did the FPU warnings treated as errors come from?