WIP: lima: lima_draw: overcome the current maximum vertices limitation

The hardware can't handle more than 65535 vertices per operation. This update configure the hardware accordingly.

Some code refactoring is still required.

Original thread: lima/mesa#86 (closed)

Tests:

glmark2-es2-drm -b bump:bump-render=high-poly
glmark2-es2-drm -b refract