microblaze: Fix coding style issues

Fix coding style issues reported by checkpatch.pl.

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index 5541ac5..a37b2b1 100644
--- a/arch/microblaze/kernel/traps.c
+++ b/arch/microblaze/kernel/traps.c
@@ -26,7 +26,7 @@
 
 static int __init kstack_setup(char *s)
 {
-	return !strict_strtoul(s, 0, &kstack_depth_to_print);
+	return !kstrtoul(s, 0, &kstack_depth_to_print);
 }
 __setup("kstack=", kstack_setup);
 
@@ -66,9 +66,7 @@
 	}
 	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 32, 4, (void *)fp,
 		       words_to_show << 2, 0);
-	printk(KERN_INFO "\n\n");
-
-	pr_info("Call Trace:\n");
+	pr_info("\n\nCall Trace:\n");
 	microblaze_unwind(task, NULL);
 	pr_info("\n");