add pss_rsae_sha{384,512}

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index a02b712..cb9b6aa 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2058,6 +2058,10 @@
     defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
             case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256:
                 break;
+            case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384:
+                break;
+            case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512:
+                break;
 #endif /* MBEDTLS_SHA256_C &&
           MBEDTLS_X509_RSASSA_PSS_SUPPORT */