drm: Add P010 format for framebuffers

BUG=b:153111783
TEST=P010 overlays can scanout

Change-Id: I9dcea6a161a82bf06e723fcc0170384863bd677d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575999
Commit-Queue: J Kardatzke <jkardatzke@chromium.org>
Commit-Queue: Jeffrey Kardatzke <jkardatzke@google.com>
Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834311}

ui/ozone/platform/drm/common/drm_util.cc

@@ -554,6 +554,8 @@ int GetFourCCFormatForOpaqueFramebuffer(gfx::BufferFormat format) {
       return DRM_FORMAT_NV12;
     case gfx::BufferFormat::YVU_420:
       return DRM_FORMAT_YVU420;
+    case gfx::BufferFormat::P010:
+      return DRM_FORMAT_P010;
     default:
       NOTREACHED();
       return 0;