powerpc: Fix kernel-doc warning

Warning(arch/powerpc/kernel/pci_of_scan.c:210): Excess function parameter 'node' description in 'of_scan_pci_bridge'
Warning(arch/powerpc/kernel/vio.c:636): No description found for parameter 'desired'
Warning(arch/powerpc/kernel/vio.c:636): Excess function parameter 'new_desired' description in 'vio_cmo_set_dev_desired'
Warning(arch/powerpc/kernel/vio.c:1270): No description found for parameter 'viodrv'
Warning(arch/powerpc/kernel/vio.c:1270): Excess function parameter 'drv' description in '__vio_register_driver'
Warning(arch/powerpc/kernel/vio.c:1289): No description found for parameter 'viodrv'
Warning(arch/powerpc/kernel/vio.c:1289): Excess function parameter 'driver' description in 'vio_unregister_driver'

Signed-off-by: Wanpeng Li <liwp@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/pci_of_scan.c

@@ -198,7 +198,6 @@ EXPORT_SYMBOL(of_create_pci_dev);
 
 /**
  * of_scan_pci_bridge - Set up a PCI bridge and scan for child nodes
- * @node: device tree node of bridge
  * @dev: pci_dev structure for the bridge
  *
  * of_scan_bus() calls this routine for each PCI bridge that it finds, and

arch/powerpc/kernel/vio.c

@@ -625,7 +625,7 @@ struct dma_map_ops vio_dma_mapping_ops = {
  * vio_cmo_set_dev_desired - Set desired entitlement for a device
  *
  * @viodev: struct vio_dev for device to alter
- * @new_desired: new desired entitlement level in bytes
+ * @desired: new desired entitlement level in bytes
  *
  * For use by devices to request a change to their entitlement at runtime or
  * through sysfs.  The desired entitlement level is changed and a balancing
@@ -1262,7 +1262,7 @@ static int vio_bus_remove(struct device *dev)
 
 /**
  * vio_register_driver: - Register a new vio driver
- * @drv:	The vio_driver structure to be registered.
+ * @viodrv:	The vio_driver structure to be registered.
  */
 int __vio_register_driver(struct vio_driver *viodrv, struct module *owner,
 			  const char *mod_name)
@@ -1282,7 +1282,7 @@ EXPORT_SYMBOL(__vio_register_driver);
 
 /**
  * vio_unregister_driver - Remove registration of vio driver.
- * @driver:	The vio_driver struct to be removed form registration
+ * @viodrv:	The vio_driver struct to be removed form registration
  */
 void vio_unregister_driver(struct vio_driver *viodrv)
 {