util: rename parse_cpu_set() to parse_cpu_set_and_warn()

It's pretty untypical for our parsing functions to log on their own.
Clarify in the name that this one does.

src/core/load-fragment.c

@@ -860,8 +860,7 @@ int config_parse_exec_cpu_affinity(const char *unit,
         assert(rvalue);
         assert(data);
 
-        ncpus = parse_cpu_set(rvalue, &cpuset, unit, filename, line, lvalue);
-
+        ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue);
         if (ncpus < 0)
                 return ncpus;
 

src/core/main.c

@@ -464,8 +464,7 @@ static int config_parse_cpu_affinity2(
         _cleanup_cpu_free_ cpu_set_t *c = NULL;
         int ncpus;
 
-        ncpus = parse_cpu_set(rvalue, &c, unit, filename, line, lvalue);
-
+        ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
         if (ncpus < 0)
                 return ncpus;