OMAPDSS: HDMI clean up hpd_gpio

hpd_gpio is no longer used by the OMAP4 HDMI IP driver, and we can thus
remove the unnecessary code.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 0fb3662..3038eef 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -710,7 +710,7 @@
 	r = hdmi_runtime_get();
 	BUG_ON(r);
 
-	r = hdmi.ip_data.ops->detect(&hdmi.ip_data);
+	r = gpio_get_value(hdmi.hpd_gpio);
 
 	hdmi_runtime_put();
 	mutex_unlock(&hdmi.lock);
@@ -733,8 +733,6 @@
 		goto err0;
 	}
 
-	hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
-
 	r = hdmi_power_on_full(dssdev);
 	if (r) {
 		DSSERR("failed to power on device\n");
@@ -768,8 +766,6 @@
 
 	mutex_lock(&hdmi.lock);
 
-	hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
-
 	r = hdmi_power_on_core(dssdev);
 	if (r) {
 		DSSERR("failed to power on device\n");