drm/amd/display: Report pitch_alignment for DCN

Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index f2647b4..459a1c5 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -58,6 +58,7 @@ struct dc_caps {
 	uint32_t i2c_speed_in_khz;
 	unsigned int max_cursor_size;
 	unsigned int max_video_width;
+	int pitch_alignment;
 	bool dcc_const_color;
 	bool dynamic_audio;
 	bool is_apu;