fsi: Assign driver's bus in fsi_driver_register()

Instead of letting each driver assign the bus, do it once in the fsi
driver register function.

Simplify the fsi drivers that are living in drivers/fsi accordingly.

Once all fsi drivers dropped assigning the bus, fsi_bus_type can be made
a static variable.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Acked-by: Eddie James <eajames@linux.ibm.com>
Link: https://patch.msgid.link/54804c2cd4d84a6b5fb679831122b6acdd36b168.1765279318.git.u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: ukleinek

drivers/fsi/fsi-core.c

@@ -1394,6 +1394,8 @@ int fsi_driver_register(struct fsi_driver *fsi_drv)
 	if (!fsi_drv->id_table)
 		return -EINVAL;
 
+	fsi_drv->drv.bus = &fsi_bus_type;
+
 	return driver_register(&fsi_drv->drv);
 }
 EXPORT_SYMBOL_GPL(fsi_driver_register);

drivers/fsi/fsi-master-hub.c

@@ -288,7 +288,6 @@ static struct fsi_driver hub_master_driver = {
 	.id_table = hub_master_ids,
 	.drv = {
 		.name = "fsi-master-hub",
-		.bus = &fsi_bus_type,
 		.probe = hub_master_probe,
 		.remove = hub_master_remove,
 	}

drivers/fsi/fsi-sbefifo.c

@@ -1133,7 +1133,6 @@ static struct fsi_driver sbefifo_drv = {
 	.id_table = sbefifo_ids,
 	.drv = {
 		.name = DEVICE_NAME,
-		.bus = &fsi_bus_type,
 		.probe = sbefifo_probe,
 		.remove = sbefifo_remove,
 	}

drivers/fsi/fsi-scom.c

@@ -606,7 +606,6 @@ static struct fsi_driver scom_drv = {
 	.id_table = scom_ids,
 	.drv = {
 		.name = "scom",
-		.bus = &fsi_bus_type,
 		.of_match_table = scom_of_ids,
 		.probe = scom_probe,
 		.remove = scom_remove,

drivers/fsi/i2cr-scom.c

@@ -140,7 +140,6 @@ static struct fsi_driver i2cr_scom_driver = {
 	.id_table = i2cr_scom_ids,
 	.drv = {
 		.name = "i2cr_scom",
-		.bus = &fsi_bus_type,
 		.of_match_table = i2cr_scom_of_ids,
 		.probe = i2cr_scom_probe,
 		.remove = i2cr_scom_remove,