vlib: rename vl_counter_t to vlib_error_desc_t

Type: improvement
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: I368b0410db2d633d3c52199c840e24d21952c1b4
diff --git a/src/tools/vppapigen/vppapigen_c.py b/src/tools/vppapigen/vppapigen_c.py
index ba08349..b298c33 100644
--- a/src/tools/vppapigen/vppapigen_c.py
+++ b/src/tools/vppapigen/vppapigen_c.py
@@ -1210,7 +1210,7 @@
         write('   {}_N_ERROR\n'.format(csetname.upper()))
         write('}} vl_counter_{}_enum_t;\n'.format(csetname))
 
-        write('extern vl_counter_t {}_error_counters[];\n'.format(csetname))
+        write('extern vlib_error_desc_t {}_error_counters[];\n'.format(csetname))
 
 
 def generate_include_types(s, module, stream):
@@ -1373,7 +1373,7 @@
 
     for cnt in counters:
         csetname = cnt.name
-        write('vl_counter_t {}_error_counters[] = {{\n'.format(csetname))
+        write('vlib_error_desc_t {}_error_counters[] = {{\n'.format(csetname))
         for c in cnt.block:
             write('  {\n')
             write('   .name = "{}",\n'.format(c['name']))