APEX bareboard example for getting the experience with extended APEX's data types and A53 assisted code loading procedure.

Typical usage:
1. Build A53_DEBUG_RAM configuration.
2. Start debug session for A53, set the breakpoint at "enable_apex_apu" function inside "main", 
   run and stop on the breakpoint.
3. Start debug session for APEX.
4. Explore APEX example using Debug, Variables and Registers views.
