ata: sata_dwc_460ex: add phy support

This adds support for powering on an optional PHY when activating the
device.

Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index fec5619..3f9bbbf 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -305,6 +305,7 @@
 
 config SATA_DWC
 	tristate "DesignWare Cores SATA support"
+	select GENERIC_PHY
 	help
 	  This option enables support for the on-chip SATA controller of the
 	  AppliedMicro processor 460EX.