topstar-laptop: Convert remaining printk to pr_info

To be similar to all other uses.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
index 1d07d6d..4c20447 100644
--- a/drivers/platform/x86/topstar-laptop.c
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -194,7 +194,7 @@
 	if (ret < 0)
 		return ret;
 
-	printk(KERN_INFO "Topstar Laptop ACPI extras driver loaded\n");
+	pr_info("ACPI extras driver loaded\n");
 
 	return 0;
 }