[ptpd] correction after tested 2.3.0-1

[jondkent]

commit 29c29f4897f8218e2c7c208b380fc4e0774310f1
Author: Jon Kent <jon.kent at gmail.com>
Date:   Sun Jun 8 17:44:46 2014 +0100

    correction after tested 2.3.0-1

 ptpd2.service |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/ptpd2.service b/ptpd2.service
index 8164727..29f14a8 100644
--- a/ptpd2.service
+++ b/ptpd2.service
@@ -4,7 +4,7 @@ Description=ptpd time precision daemon
 [Service]
 Type=forking
 EnvironmentFile=-/etc/sysconfig/ptpd2
-ExecStart=/usr/bin/ptpd2 $PTPD_CONFIG_FILE $PTPD_EXTRA_OPTIONS
+ExecStart=/usr/bin/ptpd2 -c $PTPD_CONFIG_FILE $PTPD_EXTRA_OPTIONS
 
 [Install]
 WantedBy=multi-user.target