drm/bridge: megachips: get drm_device from bridge

Fix so drm_device is read from the bridge.
This is a preparation for the connector being optional.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Martin Donnelly <martin.donnelly@ge.com>
Cc: Martyn Welch <martyn.welch@collabora.co.uk>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200726203324.3722593-11-sam@ravnborg.org

drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c

@@ -226,8 +226,8 @@ static irqreturn_t ge_b850v3_lvds_irq_handler(int irq, void *dev_id)
 				  STDP4028_DPTX_IRQ_STS_REG,
 				  STDP4028_DPTX_IRQ_CLEAR);
 
-	if (ge_b850v3_lvds_ptr->connector.dev)
-		drm_kms_helper_hotplug_event(ge_b850v3_lvds_ptr->connector.dev);
+	if (ge_b850v3_lvds_ptr->bridge.dev)
+		drm_kms_helper_hotplug_event(ge_b850v3_lvds_ptr->bridge.dev);
 
 	return IRQ_HANDLED;
 }