drm/exynos: Rename display_op power_on to dpms

This patch renames the display_op power_on to dpms to accurately reflect
what the function does.

The side-effect of this patch is that the new hdmi dpms callback is now
invoked twice in the dpms path. This is safe and will be dealt with when
the exynos_drm shim goes away.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index d9521a9..b51672f 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1813,12 +1813,12 @@
 	.is_connected	= hdmi_is_connected,
 	.get_edid	= hdmi_get_edid,
 	.check_mode	= hdmi_check_mode,
+	.dpms		= hdmi_dpms,
 
 	/* manager */
 	.mode_set	= hdmi_mode_set,
 	.get_max_resol	= hdmi_get_max_resol,
 	.commit		= hdmi_commit,
-	.dpms		= hdmi_dpms,
 };
 
 static irqreturn_t hdmi_irq_thread(int irq, void *arg)