ptp: 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: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NYangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/ptp/ptp_qoriq_debugfs.c

@@ -33,7 +33,7 @@ static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
+DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
 			 ptp_qoriq_fiper1_lpbk_set, "%llu\n");
 
 static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
@@ -64,7 +64,7 @@ static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
+DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
 			 ptp_qoriq_fiper2_lpbk_set, "%llu\n");
 
 void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
@@ -79,11 +79,11 @@ void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
 
 	qoriq_ptp->debugfs_root = root;
 
-	if (!debugfs_create_file("fiper1-loopback", 0600, root, qoriq_ptp,
-				 &ptp_qoriq_fiper1_fops))
+	if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
+					qoriq_ptp, &ptp_qoriq_fiper1_fops))
 		goto err_node;
-	if (!debugfs_create_file("fiper2-loopback", 0600, root, qoriq_ptp,
-				 &ptp_qoriq_fiper2_fops))
+	if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
+					qoriq_ptp, &ptp_qoriq_fiper2_fops))
 		goto err_node;
 	return;