Add "rockchip" to list of supported drm modules

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>

BUG=chromium:399935
TEST=On pinky:
TEST=ply-image --print-resolution
 => shows resolution
TEST=stop ui; start boot-splash
 => shows animated chrome ball

Change-Id: I030a1925c9e16c71e53f93af42c81924849d0003
Reviewed-on: https://chromium-review.googlesource.com/214300
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Queue: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: Daniel Kurtz <djkurtz@chromium.org>
diff --git a/src/ply-kms.c b/src/ply-kms.c
index 855dfbd..b1fb16d 100644
--- a/src/ply-kms.c
+++ b/src/ply-kms.c
@@ -26,7 +26,7 @@
 #include "ply-utils.h"
 
 int ply_kms_open() {
-  const char *kModuleList[] = { "i915", "exynos", "cirrus" };
+  const char *kModuleList[] = { "i915", "exynos", "cirrus", "rockchip" };
   int fd = -1;
   int i;