drm/amd/display: Reset input mode for DIG on encoder reset

[WHY & HOW]
Make enable and disable sequences symmetric.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c

@@ -63,6 +63,8 @@ void reset_dio_stream_encoder(struct pipe_ctx *pipe_ctx)
 
 	if (stream_enc && stream_enc->funcs->disable_fifo)
 		stream_enc->funcs->disable_fifo(stream_enc);
+	if (stream_enc->funcs->set_input_mode)
+		stream_enc->funcs->set_input_mode(stream_enc, 0);
 
 	link_enc->funcs->connect_dig_be_to_fe(
 			link_enc,