usb: dwc3: Move CONFIG_USB_DWC3_OMAP to Kconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index c0251b1..0bb862a 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -27,4 +27,14 @@
 
 endchoice
 
+comment "Platform Glue Driver Support"
+
+config USB_DWC3_OMAP
+	bool "Texas Instruments OMAP5 and similar Platforms"
+	help
+	  Some platforms from Texas Instruments like OMAP5, DRA7xxx and
+	  AM437x use this IP for USB2/3 functionality.
+
+	  Say 'Y' here if you have one such device
+
 endif