glsl: copy the new data fields when converting to nir

These fields added in the previous commit will be used to make use
of a NIR based GLSL linker.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>

src/compiler/glsl/glsl_to_nir.cpp

@@ -450,6 +450,10 @@ nir_visitor::visit(ir_variable *ir)
    var->data.stream = ir->data.stream;
    if (ir->data.stream & (1u << 31))
       var->data.stream |= NIR_STREAM_PACKED;
+
+   var->data.precision = ir->data.precision;
+   var->data.explicit_location = ir->data.explicit_location;
+   var->data.from_named_ifc_block = ir->data.from_named_ifc_block;
    var->data.compact = false;
 
    switch(ir->data.mode) {