glsl: Switch opcode and avail parameters to binop().
glsl: Switch opcode and avail parameters to binop().

To make it match unop().

Reviewed-by: Ian Romanick <2b237cafb16dc45038e85df6c85e74e6d899eba9@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler