[rdkb][common][hal][Refactor GetInterfaceName]

[Description]
Refactor GetInterfaceName.
1. Use a new function name wifi_GetInterfaceName and remain old method from rdkb, because wifi agent of colgin platform need to use old method.
2. remove dead code.

[Release-log]
N/A

Change-Id: I6d2664ff22b833adfd515ac9bab35d7fc7c312aa
1 file changed
tree: f12a143af895c8f994a3aeaff15b095027e8d148
  1. src/