Fix cmis cable length issue (#225)

Author: andywongarista

sonic_platform_base/sonic_xcvr/fields/public/cmis.py

@@ -3,6 +3,7 @@
 
 class CableLenField(NumberRegField):
     def __init__(self, name, offset, *fields, **kwargs):
+        kwargs["deps"] = [consts.LEN_MULT_FIELD]
         super(CableLenField, self).__init__(name, offset, *fields, **kwargs)
 
     def decode(self, raw_data, **decoded_deps):

sonic_platform_base/sonic_xcvr/mem_maps/public/cmis.py

@@ -48,10 +48,10 @@ def __init__(self, codes):
                 *(RegBitField("%s_%d" % (consts.LEN_MULT_FIELD, bit), bit) for bit in range (6, 8))
             ),
             CableLenField(consts.LENGTH_ASSEMBLY_FIELD, self.get_addr(0x0, 202),
-                *(RegBitField("%s_%d" % (consts.LENGTH_ASSEMBLY_FIELD, bit), bit) for bit in range(0, 6)),
-                deps=[consts.LEN_MULT_FIELD]
+                *(RegBitField("%s_%d" % (consts.LENGTH_ASSEMBLY_FIELD, bit), bit) for bit in range(0, 6))
             ),
             CodeRegField(consts.CONNECTOR_FIELD, self.get_addr(0x0, 203), self.codes.CONNECTORS),
+            deps=[consts.LEN_MULT_FIELD]
         )
 
         self.MODULE_LEVEL_MONITORS = RegGroupField(consts.MODULE_MONITORS_FIELD,