hal: Rename & move platform_parser.c

Move platform_parser to root hal directory. Rename
platform_parser to platform_info. Change name of
XML file read from platform_info.xml to
audio_platform_info.xml. The xml now only needs
information for ACDB ID's that you want overwritten.
Names in the XML now match sound device enums in
platform.c.

Change-Id: I6f9bfcf4149f08d88cb2a95ba021bdf7296aaf4d