Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

- Bugfixes:
	* Proper handling of boot cpu information
- Generate mem reserve map
	* linux,reserve-map property
	* generating reserve entry for device tree itself
	* generating reserve entries from tce, rtas etc. properties
- Expression support
- Macro system