drm: mali-dp: Fix transposed horizontal/vertical flip

The horizontal and vertical flip flags were the wrong way around,
causing reflect-x to result in reflect-y being applied and vice-versa.
Fix them.

Fixes: ad49f8602fe8 ("drm/arm: Add support for Mali Display Processors")

Signed-off-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>

drivers/gpu/drm/arm/malidp_planes.c

@@ -221,9 +221,9 @@ static void malidp_de_plane_update(struct drm_plane *plane,
 	if (plane->state->rotation & DRM_ROTATE_MASK)
 		val = ilog2(plane->state->rotation & DRM_ROTATE_MASK) << LAYER_ROT_OFFSET;
 	if (plane->state->rotation & DRM_REFLECT_X)
-		val |= LAYER_V_FLIP;
-	if (plane->state->rotation & DRM_REFLECT_Y)
 		val |= LAYER_H_FLIP;
+	if (plane->state->rotation & DRM_REFLECT_Y)
+		val |= LAYER_V_FLIP;
 
 	/*
 	 * always enable pixel alpha blending until we have a way to change