nir: Translate image load, store and atomic intrinsics from GLSL IR.
nir: Translate image load, store and atomic intrinsics from GLSL IR.

v2: Undefine coordinate components not applicable to the target.

Reviewed-by: Connor Abbott <71178acffcc112b21e5858656e5751f5e4aa9364@gmail.com>
Reviewed-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler