usb: dwc3: Move CONFIG_USB_DWC3_PHY_* to Kconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index 0bb862a..e93398f 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -37,4 +37,21 @@
 
 	  Say 'Y' here if you have one such device
 
+menu "PHY Subsystem"
+
+config USB_DWC3_PHY_OMAP
+	bool "TI OMAP SoC series USB DRD PHY driver"
+	help
+	  Enable single driver for both USB2 PHY programming and USB3 PHY
+	  programming for TI SoCs.
+
+config USB_DWC3_PHY_SAMSUNG
+	bool "Exynos5 SoC series USB DRD PHY driver"
+	help
+	  Enable USB DRD PHY support for Exynos 5 SoC series.
+	  This driver provides PHY interface for USB 3.0 DRD controller
+	  present on Exynos5 SoC series.
+
+endmenu
+
 endif