libdrm: add etnaviv tests

This adds the following basic unit tests:

- etnaviv_2d_test
  Let the 2D core render a defined pattern into a bo
  and store it as bmp.

- etnaviv_bo_cache_test
  Basic tests to validate the bo-cache behavior.

- etnaviv_cmd_stream_test
  Tests for the etna_cmd_stream API.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
diff --git a/configure.ac b/configure.ac
index 64f3e6c..330358a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -551,6 +551,7 @@
 	tests/exynos/Makefile
 	tests/tegra/Makefile
 	tests/nouveau/Makefile
+	tests/etnaviv/Makefile
 	tests/util/Makefile
 	man/Makefile
 	libdrm.pc])