ALSA: hda: cs35l41: Only add SPI CS GPIO if SPI is enabled in kernel

If CONFIG_SPI is not set in the kernel, there is no point in trying
to set the chip selects. We can selectively compile it.

Fixes: 8c4c216db8 ("ALSA: hda: cs35l41: Add config table to support many laptops without _DSD")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

Signed-off-by: Stefan Binding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>

sound/pci/hda/cs35l41_hda_property.c

@@ -210,6 +210,8 @@ static int generic_dsd_config(struct cs35l41_hda *cs35l41, struct device *physde
 
 	if (cfg->bus == SPI) {
 		cs35l41->index = id;
+
+#if IS_ENABLED(CONFIG_SPI)
 		/*
 		 * Manually set the Chip Select for the second amp <cs_gpio_index> in the node.
 		 * This is only supported for systems with 2 amps, since we cannot expand the
@@ -249,6 +251,7 @@ static int generic_dsd_config(struct cs35l41_hda *cs35l41, struct device *physde
 				spi_setup(spi);
 			}
 		}
+#endif
 	} else {
 		if (cfg->num_amps > 2)
 			/*