usb: phy: Fix Kconfig dependency for Phy drivers

USB phy layer driver are only built if usb host is selected, but they
are used too by USB_GADGET drivers

Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/Makefile

@@ -46,7 +46,7 @@ obj-$(CONFIG_USB_MICROTEK)	+= image/
 obj-$(CONFIG_USB_SERIAL)	+= serial/
 
 obj-$(CONFIG_USB)		+= misc/
-obj-$(CONFIG_USB)		+= phy/
+obj-$(CONFIG_USB_COMMON)	+= phy/
 obj-$(CONFIG_EARLY_PRINTK_DBGP)	+= early/
 
 obj-$(CONFIG_USB_ATM)		+= atm/

drivers/usb/phy/Kconfig

@@ -2,11 +2,11 @@
 # Physical Layer USB driver configuration
 #
 comment "USB Physical Layer drivers"
-	depends on USB
+	depends on USB || USB_GADGET
 
 config USB_ISP1301
 	tristate "NXP ISP1301 USB transceiver support"
-	depends on USB
+	depends on USB || USB_GADGET
 	depends on I2C
 	help
 	  Say Y here to add support for the NXP ISP1301 USB transceiver driver.