[MIPS] ATA: Rename routerboard 500 to 532

The platform is actually named routerboard 532 so let's call it this.  This
patch only rename files, Kconfig and C symbols; no functional changes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 292aa9a..1c11df9 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -566,11 +566,11 @@
 
 	  If unsure, say N.
 
-config PATA_RB500
-	tristate "RouterBoard 500 PATA CompactFlash support"
-	depends on MIKROTIK_RB500
+config PATA_RB532
+	tristate "RouterBoard 532 PATA CompactFlash support"
+	depends on MIKROTIK_RB532
 	help
-	  This option enables support for the RouterBoard 500
+	  This option enables support for the RouterBoard 532
 	  PATA CompactFlash controller.
 
 	  If unsure, say N.