Don't include debug.h from public header file

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

drivers/usbdev/dfu.c

@@ -39,6 +39,7 @@
 #include <nuttx/usb/dfu.h>
 #include <nuttx/kmalloc.h>
 #include <nuttx/wqueue.h>
+#include <debug.h>
 #include <errno.h>
 #include <string.h>
 #include <stdlib.h>

drivers/usbdev/rndis.c

@@ -28,6 +28,7 @@
  ****************************************************************************/
 
 #include <queue.h>
+#include <debug.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <string.h>