drm/panel: feiyang-fy07024di26a30d: make reset gpio optional

Some implementations do not use the reset signal, instead tying it to dvdd.
Make the reset gpio optional to permit this.
Signed-off-by: NPeter Geis <pgwipeout@gmail.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220511113517.4172962-3-pgwipeout@gmail.com

drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c

@@ -209,7 +209,7 @@ static int feiyang_dsi_probe(struct mipi_dsi_device *dsi)
 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->avdd),
 				     "Couldn't get avdd regulator\n");
 
-	ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+	ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset))
 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
 				     "Couldn't get our reset GPIO\n");