usb: gadget: rndis: Include "u_rndis.h"

Include "u_rndis.h" in order to fix the following sparse warning:

drivers/usb/gadget/rndis.c:1144:5: warning: symbol 'rndis_init' was not declared. Should it be static?
drivers/usb/gadget/rndis.c:1177:6: warning: symbol 'rndis_exit' was not declared. Should it be static?
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/rndis.c

@@ -35,6 +35,7 @@
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
 
+#include "u_rndis.h"
 
 #undef	VERBOSE_DEBUG