of/platform: remove all of_bus_type and of_platform_bus_type references

Both of_bus_type and of_platform_bus_type are just #define aliases
for the platform bus.  This patch removes all references to them and
switches to the of_register_platform_driver()/of_unregister_platform_driver()
API for registering.

Subsequent patches will convert each user of of_register_platform_driver()
into plain platform_drivers without the of_platform_driver shim.  At which
point the of_register_platform_driver()/of_unregister_platform_driver()
functions can be removed.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
diff --git a/sound/sparc/amd7930.c b/sound/sparc/amd7930.c
index 43c63d4..9eb1a4e 100644
--- a/sound/sparc/amd7930.c
+++ b/sound/sparc/amd7930.c
@@ -1075,7 +1075,7 @@
 
 static int __init amd7930_init(void)
 {
-	return of_register_driver(&amd7930_sbus_driver, &of_bus_type);
+	return of_register_platform_driver(&amd7930_sbus_driver);
 }
 
 static void __exit amd7930_exit(void)
@@ -1092,7 +1092,7 @@
 
 	amd7930_list = NULL;
 
-	of_unregister_driver(&amd7930_sbus_driver);
+	of_unregister_platform_driver(&amd7930_sbus_driver);
 }
 
 module_init(amd7930_init);
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index f7f05c2..68570ee 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -2120,12 +2120,12 @@
 
 static int __init cs4231_init(void)
 {
-	return of_register_driver(&cs4231_driver, &of_bus_type);
+	return of_register_platform_driver(&cs4231_driver);
 }
 
 static void __exit cs4231_exit(void)
 {
-	of_unregister_driver(&cs4231_driver);
+	of_unregister_platform_driver(&cs4231_driver);
 }
 
 module_init(cs4231_init);
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 491ce71..c421901 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -2699,12 +2699,12 @@
 /* Probe for the dbri chip and then attach the driver. */
 static int __init dbri_init(void)
 {
-	return of_register_driver(&dbri_sbus_driver, &of_bus_type);
+	return of_register_platform_driver(&dbri_sbus_driver);
 }
 
 static void __exit dbri_exit(void)
 {
-	of_unregister_driver(&dbri_sbus_driver);
+	of_unregister_platform_driver(&dbri_sbus_driver);
 }
 
 module_init(dbri_init);