MLK-20956 rtc: imx-rpmsg: do NOT overwrite rtc driver data

Some test cases need to use RTC driver data, so do NOT
overwrite it using rpmsg data structure.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Bai Ping <ping.bai@nxp.com>

drivers/rtc/rtc-imx-rpmsg.c

@@ -317,7 +317,6 @@ static int imx_rpmsg_rtc_probe(struct platform_device *pdev)
 		goto error_rtc_device_register;
 	}
 
-	platform_set_drvdata(pdev, &rtc_rpmsg);
 	ret = register_rpmsg_driver(&rtc_rpmsg_driver);
 	if (ret)
 		dev_err(&pdev->dev, "failed to register rpmsg for rtc: %d\n",