usb: dwc3: Move CONFIG_USB_DWC3_PHY_* to Kconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
diff --git a/configs/odroid-xu3_defconfig b/configs/odroid-xu3_defconfig
index cb6035b..32f6dec 100644
--- a/configs/odroid-xu3_defconfig
+++ b/configs/odroid-xu3_defconfig
@@ -21,6 +21,7 @@
 CONFIG_DM_USB=y
 CONFIG_USB_DWC3=y
 CONFIG_USB_DWC3_GADGET=y
+CONFIG_USB_DWC3_PHY_SAMSUNG=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_VIDEO_BRIDGE=y