[media] media: s5p-hdmi: add HPD GPIO to platform data

This patch extends s5p-hdmi platform data by a GPIO identifier for
Hot-Plug-Detection pin.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

include/media/s5p_hdmi.h

@@ -20,6 +20,7 @@ struct i2c_board_info;
  * @hdmiphy_info: template for HDMIPHY I2C device
  * @mhl_bus: controller id for MHL control bus
  * @mhl_info: template for MHL I2C device
+ * @hpd_gpio: GPIO for Hot-Plug-Detect pin
  *
  * NULL pointer for *_info fields indicates that
  * the corresponding chip is not present
@@ -29,6 +30,7 @@ struct s5p_hdmi_platform_data {
 	struct i2c_board_info *hdmiphy_info;
 	int mhl_bus;
 	struct i2c_board_info *mhl_info;
+	int hpd_gpio;
 };
 
 #endif /* S5P_HDMI_H */