libdrm: Fix modetest/modeprint to use automake stuff.
diff --git a/configure.ac b/configure.ac
index f4179fa..ccc58ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -119,4 +119,6 @@
 	libdrm/intel/Makefile
 	shared-core/Makefile
 	tests/Makefile
+	tests/modeprint/Makefile
+	tests/modetest/Makefile
 	libdrm.pc])