drm/i915/bios: amend child device config parameters

Add both some new and some old fields to child device config
parameters. Prepare for switching to just one child device config. Use
naming from struct old_child_dev_config for common fields.

No functional changes.

Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/bbf66c934eb5c655fd7dda6c1bb8f218c8edc209.1503600621.git.jani.nikula@intel.com

drivers/gpu/drm/i915/intel_vbt_defs.h

@@ -260,13 +260,28 @@ struct old_child_dev_config {
 /* This one contains field offsets that are known to be common for all BDB
  * versions. Notice that the meaning of the contents contents may still change,
  * but at least the offsets are consistent. */
-
 struct common_child_dev_config {
 	u16 handle;
 	u16 device_type;
-	u8 not_common1[12];
+	u8 i2c_speed;
+	u8 dp_onboard_redriver;					/* 158 */
+	u8 dp_ondock_redriver;					/* 158 */
+	u8 hdmi_level_shifter_value:4;				/* 169 */
+	u8 hdmi_max_data_rate:4;				/* 204 */
+	u16 dtd_buf_ptr;					/* 161 */
+	u8 edidless_efp:1;					/* 161 */
+	u8 compression_enable:1;				/* 198 */
+	u8 compression_method:1;				/* 198 */
+	u8 ganged_edp:1;					/* 202 */
+	u8 reserved0:4;
+	u8 compression_structure_index:4;			/* 198 */
+	u8 reserved1:4;
+	u8 slave_port;						/* 202 */
+	u8 reserved2;
+	u16 addin_offset;
 	u8 dvo_port;
-	u8 not_common2[2];
+	u8 i2c_pin;
+	u8 slave_addr;
 	u8 ddc_pin;
 	u16 edid_ptr;
 	u8 dvo_cfg; /* See DEVICE_CFG_* above */
@@ -281,7 +296,15 @@ struct common_child_dev_config {
 	u8 tmds_support:1;
 	u8 support_reserved:5;
 	u8 aux_channel;
-	u8 not_common3[11];
+	u8 dongle_detect;
+	u8 capabilities;
+	u8 dvo_wiring; /* See DEVICE_WIRE_* above */
+	u8 mipi_bridge_type;					/* 171 */
+	u16 extended_type;
+	u8 dvo_function;
+	u8 flags2;						/* 195 */
+	u8 dp_gpio_index;					/* 195 */
+	u16 dp_gpio_pin_num;					/* 195 */
 	u8 iboost_level;
 } __packed;