[mellanox]: Correct the port_config.ini of MSN2010 (#2278)

* Correct the port configuration and add the index column

Signed-off-by: Kevin Wang <kevinw@mellanox.com>

device/mellanox/x86_64-mlnx_msn2010-r0/ACS-MSN2010/port_config.ini

@@ -1,33 +1,23 @@
-# name lanes index
-Ethernet0 0 0
-Ethernet4 4 1
-Ethernet8 8 2
-Ethernet12 12 3
-Ethernet16 16 4
-Ethernet20 20 5
-Ethernet24 24 6
-Ethernet28 28 7
-Ethernet32 32 8
-Ethernet36 36 9
-Ethernet40 40 10
-Ethernet44 44 11
-Ethernet48 48 12
-Ethernet52 52 13
-Ethernet56 56 14
-Ethernet60 60 15
-Ethernet64 64 16
-Ethernet68 68 17
-Ethernet72 72 18
-Ethernet76 73 18
-Ethernet80 74 18
-Ethernet84 75 18
-Ethernet88 76 19
-Ethernet92 77 19
-Ethernet96 78 19
-Ethernet100 79 19
-Ethernet104 80 20
-Ethernet108 81 20
-Ethernet112 82 20
-Ethernet116 83 20
-Ethernet120 84 21
-Ethernet124 86 21
+# name lanes index
+Ethernet0 0 0
+Ethernet4 4 1
+Ethernet8 8 2
+Ethernet12 12 3
+Ethernet16 16 4
+Ethernet20 20 5
+Ethernet24 24 6
+Ethernet28 28 7
+Ethernet32 32 8
+Ethernet36 36 9
+Ethernet40 40 10
+Ethernet44 44 11
+Ethernet48 48 12
+Ethernet52 52 13
+Ethernet56 56 14
+Ethernet60 60 15
+Ethernet64 64 16
+Ethernet68 68 17
+Ethernet72 72,73,74,75 18
+Ethernet76 76,77,78,79 19
+Ethernet80 80,81,82,83 20
+Ethernet84 84,85,86,87 21