Modufy get_sfp() start from 1 in get_change_event()

Author: Jostar Yang

platform/broadcom/sonic-platform-modules-accton/as5835-54x/sonic_platform/chassis.py

@@ -38,7 +38,7 @@ def get_change_event(self, timeout=2000):
 
         bitmap = 0
         for i in range(54):
-            modpres = self.get_sfp(i).get_presence()
+            modpres = self.get_sfp(i+1).get_presence()
             if modpres:
                 bitmap = bitmap | (1 << i)