usb: cdns: starfive: Add cdns USB driver

Add Starfive cdns USB3 wrapper driver.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: E Shattow <lucent@gmail.com>
diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile
index d604785..1f00f23 100644
--- a/drivers/usb/cdns3/Makefile
+++ b/drivers/usb/cdns3/Makefile
@@ -8,4 +8,5 @@
 
 cdns3-$(CONFIG_$(XPL_)USB_CDNS3_HOST)	+= host.o
 
+obj-$(CONFIG_USB_CDNS3_STARFIVE)	+= cdns3-starfive.o
 obj-$(CONFIG_USB_CDNS3_TI)		+= cdns3-ti.o