radeonsi: don't set spi_ps_input_* for monolithic shaders

The driver doesn't use these values and ac_rtld has assertions
expecting the value of 0.

Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
1 file changed