[platform]: Add plugins for ingrasys (#486)

* Adding two utilities: eeprom.py and sfputil.py

device/ingrasys/x86_64-ingrasys_s9100-r0/plugins/eeprom.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+#############################################################################
+# Ingrasys S9100
+#
+# Platform and model specific eeprom subclass, inherits from the base class,
+# and provides the followings:
+# - the eeprom format definition
+# - specific encoder/decoder if there is special need
+#############################################################################
+
+try:
+    from sonic_eeprom import eeprom_tlvinfo
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+
+class board(eeprom_tlvinfo.TlvInfoDecoder):
+
+    def __init__(self, name, path, cpld_root, ro):
+        self.eeprom_path = "/sys/class/i2c-adapter/i2c-9/9-0054/eeprom"
+        super(board, self).__init__(self.eeprom_path, 0, '', True)

device/ingrasys/x86_64-ingrasys_s9100-r0/plugins/sfputil.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+try:
+    from sonic_sfp.sfputilbase import sfputilbase
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+
+class sfputil(sfputilbase):
+    """Platform specific sfputil class"""
+
+    port_start = 0
+    port_end = 31
+    ports_in_block = 32
+
+    port_to_eeprom_mapping = {}
+    port_to_i2c_mapping = {
+        0: 11,
+        1: 10,
+        2: 13,
+        3: 12,
+        4: 15,
+        5: 14,
+        6: 17,
+        7: 16,
+        8: 19,
+        9: 18,
+        10: 21,
+        11: 20,
+        12: 23,
+        13: 22,
+        14: 25,
+        15: 24,
+        16: 27,
+        17: 26,
+        18: 29,
+        19: 28,
+        20: 31,
+        21: 30,
+        22: 33,
+        23: 32,
+        24: 35,
+        25: 34,
+        26: 37,
+        27: 36,
+        28: 39,
+        29: 38,
+        30: 41,
+        31: 40
+    }
+
+    _qsfp_ports = range(0, ports_in_block + 1)
+
+    def __init__(self, port_num):
+        # Override port_to_eeprom_mapping for class initialization
+        eeprom_path = '/sys/class/i2c-adapter/i2c-{0}/{0}-0050/eeprom'
+        for x in range(self.port_start, self.port_end + 1):
+            port_eeprom_path = eeprom_path.format(self.port_to_i2c_mapping[x])
+            self.port_to_eeprom_mapping[x] = port_eeprom_path
+        sfputilbase.__init__(self, port_num)