tools: display features in --version

Reviewed-by: Andreas Mohr <andim2@users.sf.net>
diff --git a/tools/rmmod.c b/tools/rmmod.c
index 75fc7b5..bcdea4c 100644
--- a/tools/rmmod.c
+++ b/tools/rmmod.c
@@ -128,6 +128,7 @@
 			return EXIT_SUCCESS;
 		case 'V':
 			puts(PACKAGE " version " VERSION);
+			puts(KMOD_FEATURES);
 			return EXIT_SUCCESS;
 		case '?':
 			return EXIT_FAILURE;