[PATCH] ASoC: SOF: Intel: byt: fix unused-function warnings

[Arnd Bergmann]

Several functions in this driver are only referenced for baytrail-class
configurations and building configurations with only merrifield enabled
causes a warning:

sound/soc/sof/intel/byt.c:447:12: error: unused function 'byt_suspend' [-Werror,-Wunused-function]
static int byt_suspend(struct snd_sof_dev *sdev, u32 target_state)
           ^
sound/soc/sof/intel/byt.c:454:12: error: unused function 'byt_resume' [-Werror,-Wunused-function]
static int byt_resume(struct snd_sof_dev *sdev)
           ^
sound/soc/sof/intel/byt.c:464:12: error: unused function 'byt_remove' [-Werror,-Wunused-function]
static int byt_remove(struct snd_sof_dev *sdev)

Move these into a corresponding #ifdef section.

Fixes: c691f0c6e267 ("ASoC: SOF: Intel: BYT: add .remove op")
Fixes: ddcccd543f5d ("ASoC: SOF: Intel: byt: Add PM callbacks")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 sound/soc/sof/intel/byt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index e6ba8382b1de..6ae62a8a9daf 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -432,6 +432,7 @@ static void byt_set_mach_params(const struct snd_soc_acpi_mach *mach,
 	mach_params->platform = dev_name(dev);
 }
 
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
 static void byt_reset_dsp_disable_int(struct snd_sof_dev *sdev)
 {
 	/* Disable Interrupt from both sides */
@@ -467,6 +468,7 @@ static int byt_remove(struct snd_sof_dev *sdev)
 
 	return 0;
 }
+#endif
 
 /* Baytrail DAIs */
 static struct snd_soc_dai_driver byt_dai[] = {
-- 
2.26.2