drm/exynos: kill exynos_drm_crtc::pipe

Since crtc index is stored in drm_crtc pipe field became redundant.
The patch beside removing the field simplifies also
exynos_drm_crtc_get_pipe_from_type.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 25edb63..3fb8cf3 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1165,8 +1165,7 @@ static int mixer_bind(struct device *dev, struct device *manager, void *data)
 
 	exynos_plane = &ctx->planes[DEFAULT_WIN];
 	ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
-					   ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI,
-					   &mixer_crtc_ops, ctx);
+			EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
 	if (IS_ERR(ctx->crtc)) {
 		mixer_ctx_remove(ctx);
 		ret = PTR_ERR(ctx->crtc);