[POWERPC] Constify of_platform_driver name

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c
index 3c45142..b019854 100644
--- a/drivers/pcmcia/m8xx_pcmcia.c
+++ b/drivers/pcmcia/m8xx_pcmcia.c
@@ -1316,7 +1316,7 @@
 MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);
 
 static struct of_platform_driver m8xx_pcmcia_driver = {
-	.name = (char *)driver_name,
+	.name = driver_name,
 	.match_table = m8xx_pcmcia_match,
 	.probe = m8xx_probe,
 	.remove = m8xx_remove,