drm/exynos: added manager object to connector

connector contains some contents for display controller so the connector also
should be able to access controller through manager.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --cc drivers/gpu/drm/exynos/exynos_drm_connector.c
Simple merge

diff --cc drivers/gpu/drm/exynos/exynos_drm_encoder.c
Simple merge