hal: Add XML parser for platform info

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-Id: I86419bf0f48bcf7f0125da58626adab1d23fa50a