HSI: omap_ssi_port: fix debugfs_simple_attr.cocci warnings

Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.

Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/hsi/controllers/omap_ssi_port.c

@@ -162,7 +162,7 @@ static int ssi_div_set(void *data, u64 val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(ssi_sst_div_fops, ssi_div_get, ssi_div_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(ssi_sst_div_fops, ssi_div_get, ssi_div_set, "%llu\n");
 
 static int ssi_debug_add_port(struct omap_ssi_port *omap_port,
 				     struct dentry *dir)
@@ -177,7 +177,7 @@ static int ssi_debug_add_port(struct omap_ssi_port *omap_port,
 	dir = debugfs_create_dir("sst", dir);
 	if (!dir)
 		return -ENOMEM;
-	debugfs_create_file("divisor", S_IRUGO | S_IWUSR, dir, port,
+	debugfs_create_file_unsafe("divisor", 0644, dir, port,
 				   &ssi_sst_div_fops);
 
 	return 0;