phy: add the Berlin USB PHY driver

Add the driver driving the Marvell Berlin USB PHY. This allows to
initialize the PHY and to use it from the USB driver later.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index cfaced9..4144d25 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -15,6 +15,13 @@
 	  phy users can obtain reference to the PHY. All the users of this
 	  framework should select this config.
 
+config PHY_BERLIN_USB
+	tristate "Marvell Berlin USB PHY Driver"
+	depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF
+	select GENERIC_PHY
+	help
+	  Enable this to support the USB PHY on Marvell Berlin SoCs.
+
 config PHY_BERLIN_SATA
 	tristate "Marvell Berlin SATA PHY driver"
 	depends on ARCH_BERLIN && HAS_IOMEM && OF