ALSA: hda: Drop export of snd_hdac_bus_add/remove_device()

snd_hdac_bus_add_device() and snd_hdac_remove_device() are called only
internally in hda-core.  Let's drop the exports of them and move the
declarations into local.h.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/hdaudio.h

@@ -374,9 +374,6 @@ int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
 				    unsigned int cmd, unsigned int *res);
 void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
 
-int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
-void snd_hdac_bus_remove_device(struct hdac_bus *bus,
-				struct hdac_device *codec);
 void snd_hdac_bus_process_unsol_events(struct work_struct *work);
 
 static inline void snd_hdac_codec_link_up(struct hdac_device *codec)

sound/hda/hdac_bus.c

@@ -9,6 +9,7 @@
 #include <linux/module.h>
 #include <linux/export.h>
 #include <sound/hdaudio.h>
+#include "local.h"
 #include "trace.h"
 
 static const struct hdac_bus_ops default_ops = {
@@ -196,7 +197,6 @@ int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec)
 	bus->num_codecs++;
 	return 0;
 }
-EXPORT_SYMBOL_GPL(snd_hdac_bus_add_device);
 
 /**
  * snd_hdac_bus_remove_device - Remove a codec from bus
@@ -215,7 +215,6 @@ void snd_hdac_bus_remove_device(struct hdac_bus *bus,
 	bus->num_codecs--;
 	flush_work(&bus->unsol_work);
 }
-EXPORT_SYMBOL_GPL(snd_hdac_bus_remove_device);
 
 #ifdef CONFIG_SND_HDA_ALIGNED_MMIO
 /* Helpers for aligned read/write of mmio space, for Tegra */

sound/hda/local.h

@@ -33,4 +33,8 @@ int hda_widget_sysfs_reinit(struct hdac_device *codec, hda_nid_t start_nid,
 			    int num_nodes);
 void hda_widget_sysfs_exit(struct hdac_device *codec);
 
+int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
+void snd_hdac_bus_remove_device(struct hdac_bus *bus,
+				struct hdac_device *codec);
+
 #endif /* __HDAC_LOCAL_H */