 Use PSA for private key generation and public key export only for ECDHE keys
 Use PSA for private key generation and public key export only for ECDHE keys

 This should be cleaned when server-side static ECDH (1.2) support is added (#5320).

Signed-off-by: Przemek Stekiel <1d381786fa074b2f2333843496828c8e4357e75f@mobica.com>

Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls