tests: rename client_create to create_client_and_test_surface

A more descriptive name to not be confused with create_client().

v2: Rebased: fix also devices-test.c.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
diff --git a/tests/buffer-count-test.c b/tests/buffer-count-test.c
index 31d78c2..693cfc5 100644
--- a/tests/buffer-count-test.c
+++ b/tests/buffer-count-test.c
@@ -124,7 +124,7 @@
 	uint32_t buffer_count;
 	int i;
 
-	test_data.client = client_create(10, 10, 10, 10);
+	test_data.client = create_client_and_test_surface(10, 10, 10, 10);
 	if (!test_data.client->has_wl_drm)
 		skip("compositor has not bound its display to EGL\n");