Rename TLS 1.3 padding granularity macro

This is to avoid confusion with the class of macros

MBEDTLS_SSL_PROTO_TLS1_X

which have an underscore between major and minor version number.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 2e552b8..65424d6 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -277,8 +277,8 @@
 #define MBEDTLS_SSL_CID_PADDING_GRANULARITY 16
 #endif
 
-#if !defined(MBEDTLS_SSL_TLS13_PADDING_GRANULARITY)
-#define MBEDTLS_SSL_TLS13_PADDING_GRANULARITY 1
+#if !defined(MBEDTLS_SSL_TLS1_3_PADDING_GRANULARITY)
+#define MBEDTLS_SSL_TLS1_3_PADDING_GRANULARITY 1
 #endif
 
 /* \} name SECTION: Module settings */