radeonsi: move spi_ps_input_addr override outside of the loop
radeonsi: move spi_ps_input_addr override outside of the loop

Reviewed-by: Marek Olšák <8c7344a1abdb103e79ecfd488098373070c3c70e@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler