Change code based on comments

Align coding styles
Add hrr parameter for ssl_tls13_parse_server_hello
Add reset steps for SHA384 in HRR

Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index b58b0af..8bea627 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -593,7 +593,7 @@
 
 #if defined(MBEDTLS_SSL_CLI_C)
     /*!<  Number of Hello Retry Request messages received from the server.  */
-    int hello_retry_requests_received;
+    int hello_retry_request_count;
 #endif /* MBEDTLS_SSL_CLI_C */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \