iommu/apple-dart: Fix spelling mistake "grups" -> "groups"

There is a spelling mistake in a dev_err message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20231209231240.4056082-1-colin.i.king@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: ColinIanKing

drivers/iommu/apple-dart.c

@@ -911,7 +911,7 @@ static struct iommu_group *apple_dart_device_group(struct device *dev)
 
 		ret = apple_dart_merge_master_cfg(group_master_cfg, cfg);
 		if (ret) {
-			dev_err(dev, "Failed to merge DART IOMMU grups.\n");
+			dev_err(dev, "Failed to merge DART IOMMU groups.\n");
 			iommu_group_put(group);
 			res = ERR_PTR(ret);
 			goto out;