lib: Kconfig: enhance the help of OID_REGISTRY

Enhance the help for the config OID_REGISTRY.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
diff --git a/lib/Kconfig b/lib/Kconfig
index b0e5d60..e749826 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -812,6 +812,10 @@
 config OID_REGISTRY
 	bool
 	help
+	  In computing, object identifiers or OIDs are an identifier mechanism
+	  standardized by the International Telecommunication Union (ITU) and
+	  ISO/IEC for naming any object, concept, or "thing" with a globally
+	  unambiguous persistent name (https://en.wikipedia.org/wiki/Object_identifier).
 	  Enable fast lookup object identifier registry.
 
 config SMBIOS_PARSER