draw: Fix breakage due to removal pipe_viewport_state::translate[3] and scale[3].
draw: Fix breakage due to removal pipe_viewport_state::translate[3] and scale[3].

Unfortunately no LLVM type was generated for pipe_viewport_state -- it
was being treated as a single floating point array --, so llvmpipe (and
any driver that relies on draw/llvm) got totally busted.

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler