WIP: freedreno: handle multi-slice resources (cubemap, mipmap, etc)
WIP: freedreno/a3xx/compiler: add LIT

Needed by glxgears and etuxracer ;-)
WIP: freedreno/a3xx: fix gpu lockup in some piglit tests

The varying-out config comes from the inputs of the frag shader (so that
we aren't exporting unneeded varyinges).  The varyings-count should come
from the frag shader as well, to avoid a discrepency in configuration
and resulting gpu lockup.