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/.gitignore b/.gitignore
index 3226b3a..d51e619 100644
--- a/.gitignore
+++ b/.gitignore
@@ -102,4 +102,7 @@
 tests/exynos/exynos_fimg2d_event
 tests/exynos/exynos_fimg2d_perf
 tests/exynos/exynos_fimg2d_test
+tests/etnaviv/etnaviv_2d_test
+tests/etnaviv/etnaviv_cmd_stream_test
+tests/etnaviv/etnaviv_bo_cache_test
 man/*.3