Always compile the body of xnn_datatype_to_string.

This will allow tests compiled in optmimized builds to rely on that function to
generate parametrized test names.

PiperOrigin-RevId: 684832474

src/enums/datatype-strings.c

@@ -12,7 +12,6 @@
 
 
 // This function is defined inline when logging is disabled
-#if XNN_LOG_LEVEL > 0
 const char* xnn_datatype_to_string(enum xnn_datatype type) {
   switch (type) {
     case xnn_datatype_invalid:
@@ -45,4 +44,3 @@ const char* xnn_datatype_to_string(enum xnn_datatype type) {
   XNN_UNREACHABLE;
   return NULL;
 }
-#endif  // XNN_LOG_LEVEL > 0

src/xnnpack/log.h

@@ -51,13 +51,7 @@ extern "C" {
   void xnn_vlog_fatal(const char* format, va_list args);
 #endif
 
-#if XNN_LOG_LEVEL == XNN_LOG_NONE
-  inline static const char* xnn_datatype_to_string(enum xnn_datatype type) {
-    return "Unknown";
-  }
-#else
-  const char* xnn_datatype_to_string(enum xnn_datatype type);
-#endif
+const char* xnn_datatype_to_string(enum xnn_datatype type);
 
 #ifdef __cplusplus
 }  // extern "C"