This patch enables 2D composite on IGDNG. IGDNG requires
new compiled shader programs for Gen5 and some command changes.
The most notable is the layout of vertex element has changed,
but we tried to keep it as origin to not change shader programs.
Also vertex buffer state requires end address of vertex buffer
instead of origin max index.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>