powerpc/pseries/vio: Remove stray #ifdef CONFIG_PPC_PSERIES

vio.c is in platforms/pseries, which is only built if PPC_PSERIES=y.
In other words, this ifdef is pointless.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200130063153.19915-1-oohall@gmail.com

arch/powerpc/platforms/pseries/vio.c

@@ -1628,7 +1628,6 @@ const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length)
 }
 EXPORT_SYMBOL(vio_get_attribute);
 
-#ifdef CONFIG_PPC_PSERIES
 /* vio_find_name() - internal because only vio.c knows how we formatted the
  * kobject name
  */
@@ -1698,7 +1697,6 @@ int vio_disable_interrupts(struct vio_dev *dev)
 	return rc;
 }
 EXPORT_SYMBOL(vio_disable_interrupts);
-#endif /* CONFIG_PPC_PSERIES */
 
 static int __init vio_init(void)
 {