Fix memory map parsing issue (sonic-net#427)

Signed-off-by: Stephen Sun <[email protected]>

Author: stephenxs

sonic_platform_base/sonic_xcvr/codes/public/sff8636.py

@@ -60,6 +60,7 @@ class Sff8636Codes(Sff8024):
         32: "10GBASE-LR",
         64: "10GBASE-LRM",
         128: "Extended",
+        136: "40GBASE-CR4,Extended"
     }
 
     SONET_COMPLIANCE = {

sonic_platform_base/sonic_xcvr/mem_maps/public/sff8636.py

@@ -50,9 +50,7 @@ def __init__(self, codes):
             ),
             CodeRegField(consts.CONNECTOR_FIELD, self.get_addr(0, 130), self.codes.CONNECTORS),
             RegGroupField(consts.SPEC_COMPLIANCE_FIELD, 
-                CodeRegField(consts.ETHERNET_10_40G_COMPLIANCE_FIELD, self.get_addr(0, 131), self.codes.ETHERNET_10_40G_COMPLIANCE,
-                    *(RegBitField("%s_%d" % (consts.ETHERNET_10_40G_COMPLIANCE_FIELD, bit), bit) for bit in range(0, 7))
-                ),
+                CodeRegField(consts.ETHERNET_10_40G_COMPLIANCE_FIELD, self.get_addr(0, 131), self.codes.ETHERNET_10_40G_COMPLIANCE),
                 CodeRegField(consts.SONET_COMPLIANCE_FIELD, self.get_addr(0, 132), self.codes.SONET_COMPLIANCE),
                 CodeRegField(consts.SAS_SATA_COMPLIANCE_FIELD, self.get_addr(0, 133), self.codes.SAS_SATA_COMPLIANCE),
                 CodeRegField(consts.GIGABIT_ETHERNET_COMPLIANCE_FIELD, self.get_addr(0, 134), self.codes.GIGABIT_ETHERNET_COMPLIANCE),