ramips: add a patch to make dwc2 work with boards that have an old bootloader

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 37339

target/linux/ramips/patches-3.10/0035-USB-dwc2.patch

+Index: linux-3.10.1/drivers/staging/dwc2/hcd.c
+===================================================================
+--- linux-3.10.1.orig/drivers/staging/dwc2/hcd.c	2013-07-13 20:42:41.000000000 +0200
++++ linux-3.10.1/drivers/staging/dwc2/hcd.c	2013-07-15 13:25:34.220821275 +0200
+@@ -2712,6 +2712,8 @@
+ 
+ 	dev_dbg(hsotg->dev, "DWC OTG HCD INIT\n");
+ 
++	writel(0, hsotg->regs + 0xe00);
++
+ 	/*
+ 	 * Attempt to ensure this device is really a DWC_otg Controller.
+ 	 * Read and verify the GSNPSID register contents. The value should be