hal: Add XML parser for platform info

change 1
Add XML parser which parses the platform_info.xml
on the device. That xml contains ACDB ID information
and is populated from the device project folder to
the /etc folder on the device. It is used to overwrite
hardcoded ACDB ID's in platform.c.

change 2
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.

(cherry-picked from CAF commits
61764e3b, 5588688c)

Change-Id: Ie5978f609bbe9d60a64e20a0906d6bd7a8c48e1b