[aarch64] Fixes CLI crashes on dpaa2 platform.

- always use 'va_args' as pointer in all format_* functions
- u32 for all 'indent' params as it's declaration was inconsistent

Change-Id: Ic5799309a6b104c9b50fec309cba789c8da99e79
Signed-off-by: Christophe Fontaine <christophe.fontaine@enea.com>
diff --git a/src/tools/vppapigen/node.c b/src/tools/vppapigen/node.c
index 1f9905b..4c85a11 100644
--- a/src/tools/vppapigen/node.c
+++ b/src/tools/vppapigen/node.c
@@ -39,7 +39,7 @@
 char *vlib_app_name;
 char *input_filename;
 node_vft_t *the_vft[NODE_N_TYPES];
-static int indent;
+static u32 indent;
 static int dont_output_version;
 int dump_tree;
 static char *fixed_name;