dm: usb: exynos: Enable both USB ports on snow

Switch snow over to use both EHCI and XHCI at the same time.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NMarek Vasut <marex@denx.de>

include/configs/snow.h

@@ -25,7 +25,9 @@
 #define CONFIG_BOARD_COMMON
 
 #define CONFIG_USB_XHCI
+#define CONFIG_USB_EHCI
 #define CONFIG_USB_XHCI_EXYNOS
+#define CONFIG_USB_EHCI_EXYNOS
 
 #define CONFIG_SYS_PROMPT		"snow # "
 #define CONFIG_IDENT_STRING		" for snow"