gdrom: Use pr_warn instead of pr_warning

As said in commit f2c2cbcc ("powerpc: Use pr_warn instead of
pr_warning"), removing pr_warning so all logging messages use a
consistent <prefix>_warn style. Let's do it.

Link: http://lkml.kernel.org/r/20191018031850.48498-10-wangkefeng.wang@huawei.com
To: linux-kernel@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>

drivers/cdrom/gdrom.c

@@ -742,7 +742,7 @@ static int probe_gdrom(struct platform_device *devptr)
 	int err;
 	/* Start the device */
 	if (gdrom_execute_diagnostic() != 1) {
-		pr_warning("ATA Probe for GDROM failed\n");
+		pr_warn("ATA Probe for GDROM failed\n");
 		return -ENODEV;
 	}
 	/* Print out firmware ID */
@@ -814,7 +814,7 @@ static int probe_gdrom(struct platform_device *devptr)
 probe_fail_no_mem:
 	unregister_blkdev(gdrom_major, GDROM_DEV_NAME);
 	gdrom_major = 0;
-	pr_warning("Probe failed - error is 0x%X\n", err);
+	pr_warn("Probe failed - error is 0x%X\n", err);
 	return err;
 }