drm/msm/mdp5: add NV12 support for MDP5

This change adds the NV12 format support for public planes.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_fb.c b/drivers/gpu/drm/msm/msm_fb.c
index d1a7a45..6b573e6 100644
--- a/drivers/gpu/drm/msm/msm_fb.c
+++ b/drivers/gpu/drm/msm/msm_fb.c
@@ -122,7 +122,7 @@
 	struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
 	if (!msm_fb->planes[plane])
 		return 0;
-	return msm_gem_iova(msm_fb->planes[plane], id);
+	return msm_gem_iova(msm_fb->planes[plane], id) + fb->offsets[plane];
 }
 
 struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)