Prevent compiler warning, converting psa_key_policy_t to const in call to psa_set_key_policy

Author: avolinski

components/TARGET_PSA/services/attestation/COMPONENT_PSA_SRV_IMPL/psa_inject_attestation_key_impl.c

@@ -49,7 +49,7 @@ psa_attestation_inject_key_impl(const uint8_t *key_data,
 
     psa_key_policy_init();
     psa_key_policy_set_usage(&policy, usage, PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256));
-    status = psa_set_key_policy(handle, &policy);
+    status = psa_set_key_policy(handle, (const psa_key_policy_t*)&policy);
     if (status != PSA_SUCCESS) {
         return (status);
     }