drm/i915: Add the VBT LTTPR transparent vs. non-transparent bits

VBT gained a bit to indicate whether LTTPRs should use transparent
or non-transparent mode. Dunno if we should actually look at this...
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220715202044.11153-6-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_vbt_defs.h

@@ -408,7 +408,8 @@ struct child_device_config {
 			u8 compression_enable:1;		/* 198+ */
 			u8 compression_method_cps:1;		/* 198+ */
 			u8 ganged_edp:1;			/* 202+ */
-			u8 reserved2:4;
+			u8 lttpr_non_transparent:1;		/* 235+ */
+			u8 reserved2:3;
 			u8 compression_structure_index:4;	/* 198+ */
 			u8 reserved3:4;
 			u8 slave_port;				/* 202+ */