usb: dwc3: Remove duplicate inclusion of otg.h

otg.h header file was included twice.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/core.c

@@ -33,7 +33,6 @@
 #include <linux/dma-mapping.h>
 #include <linux/of.h>
 
-#include <linux/usb/otg.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 #include <linux/usb/of.h>