pata_mpc52xx: driver needs BMDMA

Found by this build-error if BMDMA is disabled:

drivers/ata/pata_mpc52xx.c: In function 'mpc52xx_ata_init_one':
drivers/ata/pata_mpc52xx.c:662: error: 'ata_bmdma_interrupt' undeclared (first use in this function)
...

Move the Kconfig entry to the proper location as needed since
9a7780c9acb821fe1c2b6fc53f74cc2556ff5364 (libata-sff: make BMDMA optional)

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index cfd04f4..36e2319 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -128,16 +128,6 @@
 
 	  If unsure, say N.
 
-config PATA_MPC52xx
-	tristate "Freescale MPC52xx SoC internal IDE"
-	depends on PPC_MPC52xx && PPC_BESTCOMM
-	select PPC_BESTCOMM_ATA
-	help
-	  This option enables support for integrated IDE controller
-	  of the Freescale MPC52xx SoC.
-
-	  If unsure, say N.
-
 config PATA_OCTEON_CF
 	tristate "OCTEON Boot Bus Compact Flash support"
 	depends on CPU_CAVIUM_OCTEON
@@ -491,6 +481,16 @@
 
 	  If unsure, say N.
 
+config PATA_MPC52xx
+	tristate "Freescale MPC52xx SoC internal IDE"
+	depends on PPC_MPC52xx && PPC_BESTCOMM
+	select PPC_BESTCOMM_ATA
+	help
+	  This option enables support for integrated IDE controller
+	  of the Freescale MPC52xx SoC.
+
+	  If unsure, say N.
+
 config PATA_NETCELL
 	tristate "NETCELL Revolution RAID support"
 	depends on PCI